SEI CERT Oracle Coding Standard for Java

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Failure to verify a digital signature, whether manually or programmatically, can result in the execution of malicious code.

Rule

Severity

Likelihood

Remediation Cost

Priority

Level

SEC06-J

High

Probable

Medium

P12

L1

Automated Detection

Automated detection is not feasible in the fully general case. However, an approach similar to Design Fragments [Fairbanks 2007] could assist both programmers and static analysis tools.

ToolVersionCheckerDescription
CodeSonar
Include Page
CodeSonar_V
CodeSonar_V

JAVA.IO.INJ.ANDROID.MESSAGE
JAVA.IO.TAINT.MESSAGE

Android Message Injection (Java)
Tainted Message (Java)

Related Guidelines

ISO/IEC TR 24772:2010

Improperly Verified Signature [XZR]

MITRE CWE

CWE-300, Channel Accessible by Non-endpoint (aka "Man-in-the-Middle")
CWE-319, Cleartext Transmission of Sensitive Information
CWE-347, Improper Verification of Cryptographic Signature
CWE-494, Download of Code without Integrity Check

Bibliography

[API 2014]

 


[Bea 2008]

 


[Eclipse 2008]

JAR Signing
Signed Bundles and Protecting against Malicious Code

[Fairbanks 2007]

 


[Flanagan 2005]

Chapter 24, "The java.util.jar Package"

[Gong 2003]

Section 12.8.3, "jarsigner"

[Halloway 2001]

 


[JarSpec 2008]

Signature Validation

[Java Tutorials]

The JarRunner Class
Lesson: API and Tools Use for Secure Code and File Exchanges
Verifying Signed JAR Files

[Muchow 2001]
 

[Oaks 2001]

Chapter 12, "Digital Signatures, Signed Classes"

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