You are viewing an old version of this page. View the current version.

Compare with Current View Page History

« Previous Version 3 Next »

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>SEC00-A. Do not allow exceptions to transmit sensitive information - CERT Secure Coding Standards</title>

<script language="javascript">
var contextPath = '/confluence';
var i18n = [];
</script>

<link rel="stylesheet" href="/confluence/s/1116/1/1/_/styles/main-action.css?spaceKey=java" type="text/css" />

<script type="text/javascript" src="/confluence/s/1116/1/_/decorators/effects.js"></script>

<script type="text/javascript">

function toggleMenu(menuId)

Unknown macro: { var visible = toggleVisibility(menuId); if (visible) setCookie("confluence.leftnav." + menuId, true); else setCookie("confluence.leftnav.", false); }

function isMenuExpanded(menuId)

Unknown macro: { return getCookie("confluence.leftnav." + menuId); }

function initMenuItem(menuId)
{
if (document.getElementById(menuId))
{
if (isMenuExpanded(menuId) == 'true')

Unknown macro: { document.getElementById(menuId).style.display = "block"; }

else

Unknown macro: { document.getElementById(menuId).style.display = "none"; }

}
}
</script>

</head>

<body onload="placeFocus()">
<!--BEGIN HEADER -->

<table border="0" width="100%" cellspacing="0" cellpadding="0" bgcolor="#ffffff"><tr>
<td valign="middle"><img src="https://www.cert.org/images/1pxinv.gif" width="5" height="94"></td><td valign="middle"><a href="https://www.cert.org/"><img
src="https://www.cert.org/cert/images/cert_logo.gif" alt="CERT" border="0"></a></td><td valign="bottom" align="right" width="100%">

<!-NAVIGATION TABLE->
<table border="0" cellspacing="0" cellpadding="0" width="600"><a href="https://www.cert.org/work/software_assurance.html"><img src="https://www.cert.org/cert/images/1off.jpg"
width="132" height="21"
alt="Software Assurance" border="0"></a><img src="https://www.cert.org/images/1pxinv.gif" width="1" height="21"><a href="https://www.cert.org/work/secure_systems.html"><img
src="https://www.cert.org/cert/images/2off.jpg" width="109" height="21" alt="Secure Systems" border="0"></a><img src="https://www.cert.org/images/1pxinv.gif" width="1" height="21"><a
href="https://www.cert.org/work/organizational_security.html"><img
src="https://www.cert.org/cert/images/3off.jpg" width="140" height="21" alt="Organizational Security" border="0"></a><img src="https://www.cert.org/images/1pxinv.gif" width="1" height="21"><a
href="https://www.cert.org/work/coordinating_response.html"><img
src="https://www.cert.org/cert/images/4off.jpg" width="140" height="21" alt="Coordinating Response" border="0"></a><img
src="https://www.cert.org/images/1pxinv.gif" width="1" height="21"><a href="https://www.cert.org/work/training.html"><img src="https://www.cert.org/cert/images/5off.jpg" width="75"
height="21" alt="Training" border="0"></a></td></tr></table>

<!--END NAVIGATION TABLE -->

</td></tr></table>

<table border="0" width="100%" cellspacing="0" cellpadding="0" bgcolor="#666666"><tr><td><img src="https://www.cert.org/images/1pxinv.gif" width="1" height="3"></td></tr></table>

<!--END HEADER -->

<script type="text/javascript">
function hideMessage(messageId)

Unknown macro: { var message = document.getElementById(messageId) message.style.display = "none"; setCookie(messageId, true); }

</script>

<div id="PageContent">
<table cellspacing="0" cellpadding="0" width="100%">
<tr class="topBar">
<td align="left">
 
<span class="topBarDiv fontSizeSmaller">
<script language="JavaScript">
function showBreadcrumbsEllipsis()

Unknown macro: { document.getElementById('breadcrumbsEllipsis').style.display = 'none'; document.getElementById('breadcrumbsExpansion').style.display = 'inline'; }

</script>
<a href="/confluence/dashboard.action">Dashboard</a>
> <a href="/confluence/display/java">java</a>
<span id="breadcrumbs">
>
<span id="breadcrumbsEllipsis">
<a href="#" onclick="showBreadcrumbsEllipsis();return false;" title="
CERT Java Secure Coding Standard ">...</a>
</span>
<span id="breadcrumbsExpansion" style="display:none;">
<a href="/confluence/display/java/CERT+Java+Secure+Coding+Standard">CERT Java Secure Coding Standard</a>
</span>
</span>
> <a href="/confluence/display/java/00.Security%28SEC%29">00. Security (SEC)</a>
> <a href="/confluence/display/java/SEC00-A.+Do+not+allow+exceptions+to+transmit+sensitive+information">SEC00-A. Do not allow exceptions to transmit sensitive information</a>
> Edit Page
</span>
</td>

<td align="right" valign="middle" style="white-space:nowrap">
<form id="quickSearch" method="POST" action="/confluence/dosearchsite.action" name="searchForm">
<input type="hidden" name="quickSearch" value="true" />

<input type="hidden" name="searchQuery.spaceKey" value="conf_global" />
<input type="text" accessKey="s" name="searchQuery.queryString" size="25"/>
<input type="submit" value="Search"/>
</form>
</td>
</tr>
</table>
<table cellspacing="0" cellpadding="0" width="100%">
<tr>
<td width="150px" valign="top" class="sidebar" nowrap>
<div class="leftnav">
<div id="logodiv">
<a href="/confluence/display/java"><img src="/confluence/images/confluence_logo.gif" align="absmiddle" border="0"></a> </div>
<div id="menu">
<table class="sectionMacro" border="0" cellpadding="5" cellspacing="0" width="100%"><tbody><tr>
<td class="confluenceTd" valign="top" width="105%">
<div class='panelMacro'><table class='infoMacro'><tr><td>

<p><b>Standards</b><br/>
<a href="/confluence/display/seccode/CERT+Secure+Coding+Standards" title="CERT Secure Coding Standards">Overview</a><br/>
<a href="/confluence/display/seccode/CERT+C+Secure+Coding+Standard" title="CERT C Secure Coding Standard">C Language</a><br/>
<a href="/confluence/pages/viewpage.action?pageId=637" title="CERT C++ Secure Coding Standard">C++</a></p>

<p><b>CERT Websites</b><br/>
<a href="http://www.cert.org/" rel="nofollow">CERT</a><br/>
<a href="http://www.cert.org/secure-coding" rel="nofollow">Secure Coding</a><br/>
<a href="http://www.cert.org/tech_tips/" rel="nofollow">Tech Tips</a></p>

<p><b>CERT Employment</b> <br/>
<a href="http://www.cert.org/jobs/" rel="nofollow"><b>Opportunities</b></a></p>

<p><a href="http://www.cert.org/books/secure-coding/" rel="nofollow"><img src="https://www.cert.org/images/securec.jpg" align="absmiddle" border="0" width="100" /></a></p>

<p><b>Related Sites</b><br/>
<a href="http://www.us-cert.gov/" rel="nofollow"><img src="https://www.cert.org/images/logo/uscert_4g_sm.jpg" align="absmiddle" border="0" /></a><br/>
<a href="http://www.cylab.cmu.edu/" title="http://www.cylab.cmu.edu/" rel="nofollow"><img src="https://www.cert.org/images/logo/cylab_alt.jpg" align="absmiddle" border="0" /></a></p></td></tr></table></div></td></tr></tbody></table>

<h5><a href="#" onCLick="toggleMenu('pagenav'); return false;"><img src="/confluence/images/icons/docs_16.gif" width=16 height=16 border=0 align=absmiddle > Page Operations</a></h5>
<div id="pagenav" class="subnav" style="display:none;">
<ul>
<li><a id="viewPageLink" href="/confluence/display/java/SEC00-A.+Do+not+allow+exceptions+to+transmit+sensitive+information" onClick="javascript:saveDraftOnPageChange(this); return false;" accessKey="v"><u>V</u>iew</a></li>
<li><a id="editPageLink" href="/confluence/pages/editpage.action?pageId=18186675" class="current" onClick="javascript:saveDraftOnPageChange(this); return false;" accessKey="e"><u>E</u>dit</a></li>
<li><a id="viewAttachmentsLink" href="/confluence/pages/viewpageattachments.action?pageId=18186675" onClick="javascript:saveDraftOnPageChange(this); return false;" accessKey="a"><u>A</u>ttachments (0)</a></li>
<li><a id="viewPageInfoLink" href="/confluence/pages/viewinfo.action?pageId=18186675" onClick="javascript:saveDraftOnPageChange(this); return false;" accessKey="i"><u>I</u>nfo</a></li>
</ul>
</div>

<h5><a href="#" onCLick="toggleMenu('browsenav'); return false;"><img src="/confluence/images/icons/browse_space.gif" height="16" width="16" border="0" align="absmiddle" title="Find Content"> Browse Space</a></h5>
<div id="browsenav"class="subnav" style="display:none;">
<ul>
<li><a href="/confluence/pages/listpages.action?key=java" >Pages</a></li>
<li><a href="/confluence/labels/listlabels-heatmap.action?key=java" >Labels</a></li>
<li><a href="/confluence/spaces/listattachmentsforspace.action?key=java" >Attachments</a></li>
<li><a href="/confluence/spaces/viewmailarchive.action?key=java" >Mail</a></li>
<li><a href="/confluence/pages/viewrecentblogposts.action?key=java" >News</a></li>
<li><a href="/confluence/spaces/usage/report.action?key=java" >Activity</a></li>
<li><a href="/confluence/spaces/viewspacesummary.action?key=java" >Advanced</a></li>
</ul>
</div>

<h5><a href="#" onCLick="toggleMenu('addcontent'); return false;"><img src="/confluence/images/icons/add_16.gif" height="16" width="16" border="0" align="absmiddle" title="Find Content"> Add Content</a></h5>
<div id="addcontent" class="subnav" style="display:none;">
<ul>

<li><a href="/confluence/pages/createpage.action?spaceKey=java&fromPageId=18186675"><img src="/confluence/images/icons/add_page_16.gif" height="16" width="16" border="0" align="absmiddle" title="Add Page"> Add Page</a></li>
</ul>
</div>

</div>
<script type="text/javascript">
initMenuItem("browsenav");
initMenuItem("pagenav");
initMenuItem("addcontent");
</script>
</div>
</td>
<td valign="top" width="100%">
<!-- Inner content table -->
<table width="100%" cellpadding="2" cellspacing="0">
<tr>
<td colspan="2" valign="middle" align="right" style="background-color:#F0F0F0">
<div style="margin-right: 3px;">

<span class="smalltext" id="userNavBar">
Welcome <a href="/confluence/display/~jpincar">Justin Pincar</a> |

<a href="/confluence/users/viewuserhistory.action" onClick="window.open(this.href,'user_history', 'width=620, height=475, resizable'); return false;" title="View History">History</a> |

<a href="/confluence/users/viewuserprofile.action?username=jpincar">Preferences</a> |

<a href="/confluence/logout.action" id="logout">Log Out</a> 
</span>
<a href="/confluence/pages/editpage.action?pageId=18186675&decorator=printable" rel="nofollow"><img src="/confluence/images/icons/print_16.gif" width="16" height="16" hspace="1" vspace="1" align="absmiddle" border="0" alt="View a printable version of the current page." title="View a printable version of the current page."/></a>

<a href="/confluence/pages/doexportpage.action?pageId=18186675&type=TYPE_PDF" rel="nofollow">
<img src="/confluence/images/icons/attachments/pdf.gif" height="16" width="16" border="0" align="absmiddle" title="Export Page as PDF"></a>

</div>
</td>
</tr>
<tr>
<td id="mainViewPane">
<div>
<table class="fullWidthBorderless">
<td><span id="spaceFullNameLink"> <a href="/confluence/display/java">java</a> </span></td>
<td align="right">
<a id="pageFavourite" href="/confluence/labels/addfavourite.action?entityId=18186675"><img src="/confluence/images/icons/star_grey.gif" height="16" width="16" border="0" align="absmiddle" title="Add this page to your favourites list" alt="Add this page to your favourites list"></a>
<a id="pageWatch" href="/confluence/pages/addpagenotification.action?pageId=18186675"><img src="/confluence/images/icons/watch_16.gif" height="16" width="16" border="0" align="absmiddle" title="Watch this page" alt="Watch this page"></a>
</td>
</table>
<div class="pagetitle" style="padding: 0px; margin-bottom:5px; margin-top: 2px;">
SEC00-A. Do not allow exceptions to transmit sensitive information
</div>
</div>
<div id="content">
<!-- call the page decorator -->
<!--
Root decorator: all decisions about how a page is to be decorated via the
inline decoration begins here.
-->

<!--
Switch based upon the context. However, for now, just delegate to a decorator
identified directly by the context.
-->

<!--[if gte IE 5.5000]>
<script language="JavaScript">
function correctPNG() // correctly handle PNG transparency in Win IE 5.5 or higher.
{
for(var i=0; i<document.images.length; i++)
{
var img = document.images[i]
var imgName = img.src.toUpperCase()
if (imgName.substring(imgName.length-3, imgName.length) == "PNG")

Unknown macro: { var imgID = (img.id) ? "id='" + img.id + "' " }

}
}
window.attachEvent("onload", correctPNG);
</script>
<![endif]-->

<style>
.imageLink

Unknown macro: { margin}

/Overwritten styles in the main.css/
.greybox

Unknown macro: { border}

</style>

<div id="editpage">
<!-- is the user logged in? -->

<script type="text/javascript" src="/confluence/s/1116/1/_/editpage-javascript"></script>

<script type="text/javascript" language="JavaScript">
var domainName = 'https://www.securecoding.cert.org/confluence';
var entityId = '18186675';
var spaceKey = 'java';

function toggleHierarchy()
{
// prepare to toggle the hierarchy checkbox
var selectbox = document.getElementById('newSpaceKey');
var checkbox = document.getElementById('hierarchy_checkbox');
var checkboxText = document.getElementById('hierarchy_text');
if (selectbox != undefined && selectbox.type == "select-one")
{
var selectedSpaceKey = selectbox.options[selectbox.selectedIndex].value;
var currentSpaceKey = 'java';

if(currentSpaceKey != selectedSpaceKey)

Unknown macro: { checkbox.disabled=false; checkbox.checked=false; checkboxText.style.color='black'; }

else

Unknown macro: { checkbox.disabled=true; checkbox.checked = true; checkboxText.style.color='lightgrey'; }

}
}

</script>

<form id="editpageform" name="editpageform" method="post" action="doeditpage.action?pageId=18186675">
<input
type="hidden"
name="originalVersion" value="2" /> <input
type="hidden"
name="originalContent" value="Propagating the content of exceptions without performing explicit filtering is often associated with information leakage. An attacker may craft input parameters such that underlying structures and mechanisms may get exposed inadvertently.

Noncompliant Code Example

This example demonstrates code that accepts a file name as an input argument on which operations are to be performed. An attacker can gain insights on the underlying file system structure by repeatedly passing different paths to fictitious files. When a file is not found, the FileInputStream constructor throws a FileNotFoundException. Other risks such as revelation of the user's home directory and as a result the user name also manifest themselves.

import java.io.FileInputStream;
import java.io.FileNotFoundException;

class exception {
  public static void main(String[] args) throws FileNotFoundException {
    FileInputStream dis = new FileInputStream("c:\\" + args[1]);
  }
}

Compliant Solution

Information leakage can result from both the exception message text and the type of exception. With FileNotFoundException, the message reveals the file system layout while the type conveys the absence of the file. The same exception must be caught while taking special care to sanitize the message before propagating it to the caller. In cases where the exception type itself can reveal too much, consider throwing a different exception (with a different message) altogether.

import java.io.FileInputStream;
import java.io.FileNotFoundException;

class exception {
  public static void main(String[] args) {
    try {
      FileInputStream dis = new FileInputStream("c:\\" + args[1]);
    }
    catch(FileNotFoundException fnf) { 
      System.out.println("Error: Operation could not be performed"); 
    } //sanitized message
  }
}

Risk Assessment

TODO

Rule

Severity

Likelihood

Remediation Cost

Priority

Level

SEC00-J

??

??

??

P??

L??

Automated Detection

TODO

References

Secure coding in Java http://java.sun.com/security/seccodeguide.html" /> <input
type="hidden"
name="labelsShowing" value="false" id="labelsShowing" /> <input
type="hidden"
name="restrictionsShowing" value="false" id="restrictionsShowing" /> <input
type="hidden"
name="locationShowing" value="false" id="locationShowing" />

<div id="editBox">
<!-headerRow with padding of 10px. needs to be renamed->

<div id="headerRow">

<!--Remove Page Link -->
<div style="float:right;">
<a href="/confluence/pages/removepage.action?pageId=18186675"><img src="/confluence/images/icons/trash_16.gif" width="16" height="16" border="0px" align="absmiddle" title="Remove"></a> <a href="/confluence/pages/removepage.action?pageId=18186675">Remove Page</a>
</div>
<div style="float:left"/>
<!-title text field->
<div style="margin-bottom:5px;">
<input type="text"
name="title"
size="55" value="SEC00-A. Do not allow exceptions to transmit sensitive information" tabindex="1" class="pagetitle" /> </div>

<!-- Start location section -->
<div class="inputSection">

<script>
<!--

function hideLocationDiv()
{
$('location_div').style.display = 'none';
publishFormData($('newSpaceKey'), $('space_info'), $('space_content'));
publishFormData($('parentPageString'), $('parent_info'), $('parent_content'));

$('location_edit_link').innerHTML = "EDIT";
highlight($('location_info'));
}

function showLocationDiv()
{
$('location_div').style.display = 'block';
$('location_edit_link').innerHTML = "DONE";
}

function toggleLocation()
{
if($('location_div').style.display == 'none')

Unknown macro: { showLocationDiv(); }

else

Unknown macro: { hideLocationDiv(); }

return false;
}

//-->
</script>

<span class="formtitle">Location:</span>
<span id="location_info" onclick="toggleLocation()">
<span id="space_info" >
<span id="space_content">java</span>
</span>
<span id="parent_info" >
> <span id="parent_content">00. Security (SEC)</span>
</span>
<span class="inline-control-link fontSizeTiny" id="location_edit_link">EDIT</span>
</span>
<div id="location_div" class="toggleFormDiv" style="padding: 8px; display:none">
<table>
<tr>
<td valign="top">
<div>
<div>
<label onclick="toggleLocation()" class="formtitle">Space</label>
<br />
<select id="newSpaceKey" name="newSpaceKey" tabindex="3" onChange=" blankParent();">
<option value="cplusplus" >C++ Secure Coding Practices</option>
<option value="java" selected>java</option>
<option value="seccode" >Secure Coding</option>
<option value="SD" >Secure Design</option>
</select>
</div>
</div>
</td>
<td valign="top">
<div>

<div class="formtitle">
Parent Page
</div>
<input type="text"
name="parentPageString"
size="30" value="00. Security (SEC)" tabindex="2" id="parentPageString" /> <a href="#" onClick="window.open('/confluence/users/spacepagepicker.action?pageId=18186675&currentspace=' + document.getElementById('newSpaceKey').value + '&formname=editpageform&fieldname=parentPageString&mode=history','link_inserter', 'width=620, height=400, resizable, scrollbars=yes'); return false;" title="Choose Page" tabindex="diabled"><img src="/confluence/images/icons/document_zoom_in_16.gif" width="16" height="16" border="0" tabindex="diabled" align="absmiddle"></a>
</div>
</td>
</tr>
</table>
</div>

<script>
</script>
</div>
</div>
<!-- End location section -->
<div>
<!-- edit page form -->
<!-- captcha form elements -->
<br style="clear: both" />
</div>
<!-content editor->
<div class="inputSection">
<div style="float:right;">
<div class="submitButtons">
<input
tabindex="102" accessKey="s" type="submit" name="confirm" value="Save"/>  
<input
tabindex="104" type="submit" name="cancel" value="Cancel"/> </div>
</div>
<div id="editorDiv" style="width:100%">

<script type="text/javascript">
var contentId = "18186675" ;

// this function is needed to store the caret position for IE browsers
// you need to insert a call to storeCaret(this); to the onclick, onselect and onkeyup events of
// the textarea you are editing
function storeCaret(textAreaObject)
{
if (textAreaObject.createTextRange) // test for IE browsers

Unknown macro: { textAreaObject.caretPos = document.selection.createRange().duplicate(); }

}

// this function stores the selected and unselected text for the textarea in hidden fields on the form
function storeTextareaBits()
{
var t = $('markupTextarea');
var currentForm = getCurrentForm();

if (t.selectionStart != null)

Unknown macro: { // for netscape, mozilla, gecko t.sel = t.value.substr(t.selectionStart, t.selectionEnd - t.selectionStart); t.sel1 = t.value.substr(0, t.selectionStart); t.sel2 = t.value.substr(t.selectionEnd); currentForm.selectedText.value = t.sel; }

else if (document.selection && document.selection.createRange)
{
// for ie
var str = document.selection.createRange().text;
try

Unknown macro: { currentForm.elements['content'].focus(); }

catch (e)

Unknown macro: { // ignore }

var sel = document.selection.createRange();
currentForm.selectedText.value = sel.text;
return;
}
}

function showRichText(show)
{
}

function showMarkup(show)
{
if(show)
{
$('markup').style.display = 'block';
$('markupTab').className = 'current';

if ($('helptd'))
{
try

Unknown macro: { $('helptd').style.display = 'table-cell'; }

catch (e)

Unknown macro: { // IE throws exception with invalid display type, so // we'll use the incorrect value of 'block' $('helptd').style.display = 'block'; }

}
if ($('linkinserters'))

Unknown macro: { $('linkinserters').style.display = 'block'; }

}
else
{
$('markup').style.display = 'none';
$('markupTab').className = '';

if ($('helptd'))

Unknown macro: { $('helptd').style.display = 'none'; }

if ($('linkinserters'))

Unknown macro: { $('linkinserters').style.display = 'none'; }

}
}

function showPreview(show)
{
if(show)

Unknown macro: { $('preview').style.display = 'block'; $('previewTab').className = 'current'; }

else

Unknown macro: { $('preview').style.display = 'none'; $('previewTab').className = ''; }

}

function setRichTextDefault(value)

Unknown macro: { AjaxUserProfileEditor.setPreferenceUserEditWysiwyg(value); $('makeRichTextDefault').style.display = 'none'; $('makeMarkupDefault').style.display = 'none'; }

function showWaitImage(flag)

Unknown macro: { $('wysiwygWaitImage').style.visibility = (flag ? 'visible' }

function reply_setTextArea(s)

Unknown macro: { showWaitImage(false); setMode('markup'); if (s != null) $('markupTextarea').value = s; }

function reply_setEditorValue(s)

Unknown macro: { showWaitImage(false); setMode('richtext'); setEditorValue(s); }

function reply_setPreviewArea(s)

Unknown macro: { showWaitImage(false); setMode('preview'); $('previewArea').innerHTML = s; }

/**

  • Set up the page for rich text or markup editing
    */
    function setMode(mode)
    {
    var inRichText = inRichTextMode();
    var form = getCurrentForm();
    form.mode.value = mode;
    if (mode != 'preview')
    Unknown macro: { form.xhtml.value = (mode == 'richtext'); }

if (mode == 'richtext')

Unknown macro: { showRichText(true); showMarkup(false); showPreview(false); }

if (mode == 'markup')

Unknown macro: { if (inRichText) showRichText(false); showMarkup(true); showPreview(false); }

if (mode == 'preview')
{
saveDraft(null);
if (inRichText)

Unknown macro: { // get the editor content in case we come back to wiki-markup lastKnownGoodContent = getEditorHTML() + ""; showRichText(false); }

showMarkup(false);
showPreview(true);
}
}

// Hide and show the "make default" links, based on what mode the user is currently in, and what the WYSIWYG setting is
function showDefaultLinks(defaultIsWysiwyg)
{
var showRichTextDefault = false;
var showMarkupDefault = false;
var form = getCurrentForm();

// If we are in MARKUP mode, show the text to set markup as default
if (defaultIsWysiwyg && form.mode.value == 'markup')

Unknown macro: { showMarkupDefault = true; }

// If we are in RICHTEXT mode, show the text to set richtext as default
else if (!defaultIsWysiwyg && form.mode.value == 'richtext')

Unknown macro: { showRichTextDefault = true; }

$('makeRichTextDefault').style.display = (showRichTextDefault ? 'inline' : 'none');
$('makeMarkupDefault').style.display = (showMarkupDefault ? 'inline' : 'none');
}

// Save the last edit mode in case the user changes to preview and from there to the other edit mode...
// then we will have to convert the markup to XHTML or vice verca.
var lastEditMode;

var lastKnownGoodContent = null;

function inRichTextMode()

Unknown macro: { var form = getCurrentForm(); return form.mode.value == 'richtext'; }

function changeMode(mode)
{
var form = getCurrentForm();

if (form.mode.value != mode)
{
showWaitImage(true);

if (mode == 'markup') // going from wysiwyg to markup
{
// If the current mode is preview...
if (form.mode.value == 'preview')
{
// Markup -> Preview -> Markup
// We don't need to do any conversion...
if(lastEditMode == 'markup')

Unknown macro: { reply_setTextArea(null); }

// WYSIWYG -> Preview -> Markup
// Convert the WYSIWYG html to wiki markup
else

Unknown macro: { WysiwygConverter.convertXHtmlToWikiMarkupWithoutPage(lastKnownGoodContent,contentId,reply_setTextArea); }

}
// WYSIWYG -> Markup, so just convert
else

Unknown macro: { WysiwygConverter.convertXHtmlToWikiMarkupWithoutPage(getEditorHTML() + "",contentId,reply_setTextArea); }

}

else if (mode == 'richtext')// going from markup to wysiwyg
{
var textarea = $('markupTextarea');

// If the current mode is preview...
if (form.mode.value == 'preview')
{
// WYSIWYG -> Preview -> WYSIWYG
// We don't need to reload or convert the contents of the tinyMCE editor
if(lastEditMode == 'richtext')

Unknown macro: { reply_setEditorValue(null); }

// Markup -> Preview -> WYSIWYG
// Convert the markup to be used with WYSIWYG
else

Unknown macro: { WysiwygConverter.convertWikiMarkupToXHtmlWithoutPage(textarea.value,contentId, reply_setEditorValue); }

}
// Markup -> WYSIWYG, so just grab the contents of the markup textarea and convert it to be used with WYSIWYG
else

Unknown macro: { WysiwygConverter.convertWikiMarkupToXHtmlWithoutPage(textarea.value,contentId, reply_setEditorValue); }

}

else // viewing the preview
{
// WYSIWYG -> Preview
if (form.mode.value == 'richtext')

Unknown macro: { lastEditMode = 'richtext'; var html = getEditorHTML() + ""; lastKnownGoodContent = html; WysiwygConverter.convertToPreview(html,contentId, 'java', 'richtext', reply_setPreviewArea); }

// Markup -> Preview
else

Unknown macro: { lastEditMode = 'markup'; var textarea = $('markupTextarea'); WysiwygConverter.convertToPreview(textarea.value, contentId, 'java', 'markup', reply_setPreviewArea); }

}
}
}

var contentHasChangedSinceLastAutoSave = false;
function saveDraft(callback)
{
if (!callback)
callback = function() {};

var form = getCurrentForm();
if (hasContentChanged())
{
var draftData = new Object();
draftData.pageId = '18186675';
if (form.title)

Unknown macro: { draftData.title = form.title.value; }

if (form.newSpaceKey)

Unknown macro: { draftData.spaceKey = form.newSpaceKey.value; }

else

Unknown macro: { draftData.spaceKey = 'java'; }

if (form.originalVersion)

Unknown macro: { draftData.pageVersion = parseInt(form.originalVersion.value); }

draftData.type='page';
draftData.content = getCurrentFormContent(form);
DraftAjax.saveDraft(draftData, form.xhtml.value == 'true', callback);
resetContentChanged();
}
else

Unknown macro: { // must call the call back even if we don't save a draft! callback(); }

}
function heartbeat()
{
HeartbeatAjax.startActivity('18186675', 'page',
function (activityResponses)
{
if (activityResponses.length > 0)
{
$('heartbeatDiv').style.display = 'block';
var html = "";
var sep = "";
for (i = 0; i < activityResponses.length; ++i)

Unknown macro: { var activityResponse = activityResponses[i] var usernamelink = '<a href="/confluence/display/~' + activityResponse.userName + '">' + activityResponse.fullName + '</a>'; var lastEditDateMessage = ''; if (activityResponse.lastEditDate != null) lastEditDateMessage = '<span class="smalltext">(last edit ' + activityResponse.lastEditDate + ')</span>'; html += sep + usernamelink + ' ' + lastEditDateMessage; sep = ", "; }

$('otherUsersSpan').innerHTML = html;
}
else

Unknown macro: { $('heartbeatDiv').style.display = 'none'; }

}
);
}
function getCurrentForm()

Unknown macro: { return document.forms['editpageform']; }

// Fallback function for Safari to show to submit the form via JavaScript and display the preview page.
function sendFormWithPreview()

Unknown macro: { form = getCurrentForm(); // create a hidden field for the update variable var el = document.createElement("input"); el.type = "hidden"; el.name = "preview"; el.name = "preview"; el.value = "preview"; form.appendChild(el); form.submit(); }

// function to send the form to discard/use the draft
function sendFormDraft(flagName)
{
form = getCurrentForm();

addHiddenElement(form, flagName, "true");
addHiddenElement(form, "pageId", "18186675");
if (!form.spaceKey)

Unknown macro: { addHiddenElement(form, "spaceKey", "java"); }

form.action="edit$

Unknown macro: {draft.draftType}

.action";
form.submit();
}

function addHiddenElement(form, name, value)

Unknown macro: { var el = document.createElement("input"); el.type = "hidden"; el.name = name; el.value = value; form.appendChild(el); }

</script>
<div id='heartbeatDiv' style="display: none;">
<table style="clear: right" cellpadding='5' width='100%' cellspacing='8px' class='noteMacro' border="0" align='center'>
<tr><td valign='top' width="1%"><img src="/confluence/images/icons/emoticons/warning.gif" width="16" height="16" align="absmiddle" alt="" border="0"></td><td>
This page is being edited by <span id='otherUsersSpan'/>.
</td></tr>
</table>
</div>

<ul class="tabnav" style="border-bottom: 0; width: 400px">
<li class="tabs">
<a id="markupTab" class="current" href="#" onClick="javascript:changeMode('markup');return false;">Wiki Markup</a>
<a id="previewTab" href="#" onClick="javascript:sendFormWithPreview();return false;">Preview</a>
</li>
<li class="nontabs" style="margin: 8px 0pt 0pt 3px"><img id="wysiwygWaitImage" style="visibility:hidden" alt="Wait Image" border=0 src="/confluence/images/icons/wait.gif"></li>

</ul>
<!-- clears the floated elements above -->
<br class="after-tabnav">

<div style="background-color:#D6D6D6; border:1px solid #CCC; border-bottom:0; " id='linkinserters'>
<a style="text-decoration: none" href="#" onClick="storeTextareaBits(); window.open('/confluence/users/insertimageinpage.action?pageId=18186675&formname=editpageform&fieldname=content&mode=search','link_image_inserter', 'width=700, height=400, resizable, scrollbars=yes'); return false;" title="Insert Image">
<img src="/confluence/images/icons/confimage.gif" border="0px" title="Insert Image">
</a>

<a style="text-decoration: none" href="#" onClick="storeTextareaBits(); window.open('/confluence/users/insertlink.action?pageId=18186675&currentspace=java&formname=editpageform&fieldname=content' + (document.getElementById('selectedText').value ? '&alias=' + document.getElementById('selectedText').value : ''),'link_inserter', 'width=620, height=480, resizable, scrollbars=yes'); return false;" title="Insert Link">
<img src="/confluence/images/icons/conflink.gif" border="0px" title="Insert Link">
</a>
</div>

<script type="text/javascript">
var useWysiwyg = false;

/*---------------------------------------------------------------------------
Redefine the following two methods without calls to editorHasContentChanged()
---------------------------------------------------------------------------*/
function hasContentChanged()

Unknown macro: { return contentHasChangedSinceLastAutoSave; }

function resetContentChanged()

Unknown macro: { contentHasChangedSinceLastAutoSave = false; }

</script>

<script type="text/javascript" src="/confluence/s/1116/1/_/dwr/engine.js"></script>
<!-- request this the traditional way to fix CONF-5561 -->

<script type="text/javascript" src="/confluence/s/1116/1/_/wysiwyg-javascript"></script>
<div id="markup" >
<div>

<textarea id="markupTextarea" name="content"
cols=""
rows="30"

tabindex="5" onclick="storeCaret(this);"
onselect="storeCaret(this); storeTextareaBits()"
onkeyup="storeCaret(this);contentChangeHandler();"
onchange="contentChangeHandler();"
style="padding:0; margin:0; width:100%; "
class="monospaceInput"
>Propagating the content of exceptions without performing explicit filtering is often associated with information leakage. An attacker may craft input parameters such that underlying structures and mechanisms may get exposed inadvertently.

Noncompliant Code Example

This example demonstrates code that accepts a file name as an input argument on which operations are to be performed. An attacker can gain insights on the underlying file system structure by repeatedly passing different paths to fictitious files. When a file is not found, the FileInputStream constructor throws a FileNotFoundException. Other risks such as revelation of the user's home directory and as a result the user name also manifest themselves.

import java.io.FileInputStream;
import java.io.FileNotFoundException;

class exception {
  public static void main(String[] args) throws FileNotFoundException {
    FileInputStream dis = new FileInputStream("c:\\" + args[1]);
  }
}

Compliant Solution

Information leakage can result from both the exception message text and the type of exception. With FileNotFoundException, the message reveals the file system layout while the type conveys the absence of the file. The same exception must be caught while taking special care to sanitize the message before propagating it to the caller. In cases where the exception type itself can reveal too much, consider throwing a different exception (with a different message) altogether.

import java.io.FileInputStream;
import java.io.FileNotFoundException;

class exception {
  public static void main(String[] args) {
    try {
      FileInputStream dis = new FileInputStream("c:\\" + args[1]);
    }
    catch(FileNotFoundException fnf) { 
      System.out.println("Error: Operation could not be performed"); 
    } //sanitized message
  }
}

References

Secure coding in Java http://java.sun.com/security/seccodeguide.html</textarea>
</div>
</div>
<input id="selectedText" name="selectedText" type="hidden">
<!-- two hidden fields to store textarea parts for mozilla based browsers -->
<input type="hidden" name="sel1"><!-sel1: text before the selection->
<input type="hidden" name="sel2"><!-sel2: text after the selection->

<input type="hidden" name="inPreview" value="false"/>
<input type="hidden" name="mode" value="markup"/>
<input type="hidden" name="xhtml" value="false"/>

<div id="preview" style="display: none ; border:1px solid #CCCCCC; background-color:white;">
<div id="previewArea" style="margin:5px;"></div>
</div>

<!-- javascript code to initialise draft and heartbeat ajax -->
<script type="text/javascript">
DraftAjax.getDraftSaveInterval(
function (interval)

Unknown macro: { setInterval("saveDraft()", interval); }

);
if ('18186675' != '0')
{
heartbeat();
HeartbeatAjax.getHeartbeatInterval(
function (interval)

Unknown macro: { setInterval("heartbeat()", interval); }

);
}

function contentChangeHandler()

Unknown macro: { contentHasChangedSinceLastAutoSave = true; }

</script> </div>
</div>
<!-- comment field and minor edit checkbox -->
<div class="inputSection">
<div style="float:right">
<input id="minorEdit" type="checkbox" name="minorEdit" value="true" />
<label for="minorEdit">
<span class="smalltext"><b>Minor change?</b> (no notifications will be sent)</span>
</label>
</div>
<span class="formtitle">Comment:</span>
<input type="text"
name="versionComment"
size="40" tabindex="6" class="monospaceInput" style="width: 50%" /> </div>

<!-- Page permissions -->
<div class="inputSection">

<!-- Copy some methods out of prototype 1.5 since we can't rev to it yet due to it causing a memory leak in jwebunit 1.2 and hence our func tests -->
<!-- this block of javascript can be removed when we rev to prototype 1.5 -->
<script type="text/javascript">
Array.prototype.indexOf = function(object)

Unknown macro: { for (var i = 0, length = this.length; i < length; i++) if (this[i] == object) return i; return -1; }

Array.prototype.without = function()
{
var values = $A(arguments);
return this.select(function(value)

Unknown macro: { return !values.include(value); }

);
}

String.prototype.strip = function()

Unknown macro: { return this.replace(/^s+/, '').replace(/s+$/, ''); }

</script>

<script type="text/javascript">

var viewPagePermissions = new PagePermissions();

var editPagePermissions = new PagePermissions();

var viewPermissionManager = new PermissionManager(PagePermissionType.VIEW);
var editPermissionManager = new PermissionManager(PagePermissionType.EDIT);
var currentPermissionManager = viewPermissionManager;

i18n['done.name.caps'] = 'DONE';
i18n['edit.name.caps'] = 'EDIT';
i18n['page.perms.viewing.restricted'] = 'Viewing restricted to:';
i18n['page.perms.editing.restricted'] = 'Editing restricted to:';
i18n['page.perms.no.view.restrictions'] = 'No viewing restrictions set on this page';
i18n['page.perms.no.edit.restrictions'] = 'No editing restrictions set on this page';
i18n['page.perms.duplicate.names'] = 'Duplicate user or group name(s):';
i18n['page.perms.invalid.entity.names'] = 'Invalid user or group name(s):';

</script>

</div>

<!-labels section->

<script>
function toggleLabels()
{
toggleVisibility('labels_div');
toggleVisibility('labels_info');
if($('labels_div').style.display == 'none')

Unknown macro: { $('labels_info').innerHTML = $('labelsString').value.toLowerCase(); $('labels_edit_link').innerHTML = "EDIT"; highlight($('labels_info')); }

else

Unknown macro: { SuggestedLabelsForEntity.viewLabels('18186675', "labels/editpage-suggestedlabels.vm", loadSuggestedLabels); $('labels_edit_link').innerHTML = "DONE"; }

}

function loadSuggestedLabels(ajaxResponse)
{
if (ajaxResponse.success)

Unknown macro: { $('suggestedLabelsSpan').innerHTML = ajaxResponse.response; }

}
</script>

<div id="labels_tab">
<span class="formtitle">Labels: </span><span onclick="toggleLabels()" class="inline-control-link fontSizeTiny" id="labels_edit_link">EDIT</span>
</div>
<div id="labels_info">
incomplete
</div>

<div id="labels_div" class="toggleFormDiv" style="padding: 8px; display:none">
<table width="100%">
<tr>
<td width="60%" valign="top">
<span class="error">
<span class="errorMessage" id="errorSpan"></span>
</span>
<input autocomplete="off" type="text" id="labelsString" name="labelsString" value="incomplete" class="monospaceInput" style="width:100%;" />
<div class="smalltext"><em>Tip:</em> Looking for a label? Just start typing.</div>
<div class="auto_complete" id="labelsAutocompleteList"></div>

<script>new Ajax.Autocompleter('labelsString', 'labelsAutocompleteList', '18186675',

Unknown macro: { tokens}

);</script>
</td>
<td valign="top">
<div id="suggestedLabelsSpan" style="margin-top:5px;">

</div>
</td>
</tr>
</table>
</div>

<script>
</script>
<div>
<div class="submitButtons">
<input
tabindex="102" accessKey="s" type="submit" name="confirm" value="Save"/>  
<input
tabindex="104" type="submit" name="cancel" value="Cancel"/> </div>
</div>
</div>
</div>
</form>
<script type="text/javascript">
(function() {
$A(document.getElementsByClassName("submitButtons")).each(function(div) {
$A(div.getElementsByTagName("input")).each(function(button)

Unknown macro: { Event.observe(button, "click", pageFormSubmit, false); }

);
});
})();
</script>
</div>
</div>
</td>

<td valign="top" id="helptd" style="display:block; width:200px; border-top:1px solid #CCC;">
<div style="padding-left:5px;">
<div class="rightpanel">
<div id="helpheading">
<img src="/confluence/images/icons/help_16.gif" height=16 width=16 border=0 align=absmiddle title="Help Tips">
Help Tips
</div>
<div id="helpcontent">
<p>
<b>Notation Help:</b>

(<a href="#" onClick="window.open('/confluence/renderer/notationhelp.action','notation_help','width=780, height=580, resizable, scrollbars')">full guide</a>)

<br/>
Text formatting:<br/>
<span class="smalltext">
bold » <b class="strong">bold</b><br/>
italic » <em class="emphasis">italic</em><br/>
strike » <del class="deleted">strike</del><br/>
under » <u>under</u><br/>
</span>
</p>
<p>
Headings:<br/>
<span class="smalltext">

Large heading!<br />

Medium heading<br/>

Small heading...<br/>

</span>
</p>
<p>
Lists:<br/>
<span class="smalltext">

  • Bulleted point<br />
  1. Numbered point<br/>
    </span>
    </p>
    <p>
    Linking:<br/>
    <span class="smalltext">
    [title#anchor] » Link a page<br/>
    [dev:title#anchor] » In space with 'dev'<br/>
    http://host.com » Remote link<br/>
    [phrase@shortcut] » Shortcut<br/>
    <b><i>Note:</i></b> [alias] » Custom link title
    </span>
    </p>
    <p>
    Tables:<br/>
    <span class="smalltext">

    head1

    head2

    <br/>

    colA1

    colA2

    <br/>

    colB1

    colB2

    </span>
    </p>

Details and full examples are in the
<a href="/confluence/renderer/notationhelp.action" onClick="window.open(this.href,'notation_help','width=680, height=440, resizable, scrollbars'); return false;">full notation guide »</a>
</div>
</div>
</div>
</td>
</tr>
</table>
<!-- End inner content table -->
</td>
</tr>
</table>
</div>
<div class="bottomshadow"></div>
<!-- <div id="poweredby" class="smalltext">
Powered by <a href="http://www.atlassian.com/software/confluence" class="smalltext">Atlassian Confluence</a> 2.7.3, the <a href="http://www.atlassian.com/software/confluence" class="smalltext">Enterprise Wiki</a>.
<a href="http://jira.atlassian.com/secure/BrowseProject.jspa?id=10470" class="smalltext">Bug/feature request</a>
-
<a href="http://www.atlassian.com/about/connected.jsp?s_kwcid=Confluence-stayintouch" class="smalltext">Atlassian news</a>
-
<a href="/confluence/administrators.action">Contact administrators</a>
<br/>
</div>
-->

<!-- delay the loading of large javascript files to the end so that they don't interfere with the loading of page content -->
<span style="display: none"></span>

<!--BEGIN FOOTER -->

<table border="0" width="100%" cellspacing="0" cellpadding="8" bgcolor="#666666"><tr>
<td width="50%"><img src="https://www.cert.org/cert/images/sei_cmu_logo2.gif" alt="Software Engineering Institute | Carnegie Mellon University" border="0" usemap="#footermap"/>
<map name="footermap" id="footermap">
<area shape="rect" coords="2,2,233,19" href="http://www.sei.cmu.edu/" alt="Software Engineering Institute"/>
<area shape="rect" coords="241,3,341,19" href="http://www.cmu.edu/" alt="Carnegie Mellon University" />
</map>
</td>
<td width="50%" align="right">
<span style="font-size:11px; color:#ffffff; font-family:Verdana">
<a style="color:#ffffff" href="https://www.cert.org/">Home</a> |
<a style="color:#ffffff" href="https://www.cert.org/meet_cert/meetcertcc.html">About</a> |
<a style="color:#ffffff" href="https://www.cert.org/contact_cert/">Contact</a> |
<a style="color:#ffffff" href="https://www.cert.org/faq/cert_faq.html">FAQ</a> |
<a style="color:#ffffff" href="https://www.cert.org/stats/">Statistics</a> |
<a style="color:#ffffff" href="https://www.cert.org/jobs/">Jobs</a> |
<a style="color:#ffffff" href="https://www.cert.org/legal_stuff/">Legal</a> |
<a style="color:#ffffff" href="https://www.securecoding.cert.org/confluence/display/seccode/Terms+and+Conditions">Legal</a>
<br/>
Copyright © 1995-2008 Carnegie Mellon University
</td>
</tr>
</table>

<!--END FOOTER -->
</body>
</html>

  • No labels