App::Context security bypass

appcontext-cve20126141-sec-bypass (84198) The risk level is classified as MediumMedium Risk

Description:

App::Context could allow a remote attacker to bypass security restrictions, caused by an error when verifying the GPG signature. A remote attacker could exploit this vulnerability using man-in-the-middle techniques to bypass the signature verification process.

*CVSS:

Base Score: 4.3
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: Partial
  Availability Impact: None
 
Temporal Score: 3.2
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Bypass Security

Remedy:

Apply the appropriate update for your system. See References.

References:

  • CPAN Web site: App::Context.
  • oss-sec mailing list, Tue, 14 May 2013 01:06:09 -0600: Re: CVE Request: Storable::thaw called on cookie data in multiple CPAN modules.
  • BID-59832: App::Context Signature Verification Security Bypass Vulnerability
  • CVE-2012-6141: The App::Context module 0.01 through 0.968 for Perl does not properly use the Storable::thaw function, which allows remote attackers to execute arbitrary code via a crafted request to (1) App::Session::Cookie or (2) App::Session::HTMLHidden, which is not properly handled when it is deserialized.

Platforms Affected:

  • CPAN App::Context 0.968

Reported:

May 14, 2013

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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