medium
5
CWE
189 119
Advisory Published
Updated

CVE-2011-2516: Buffer Overflow

First published: Mon Jul 11 2011(Updated: )

Off-by-one error in the XML signature feature in Apache XML Security for C++ 1.6.0, as used in Shibboleth before 2.4.3 and possibly other products, allows remote attackers to cause a denial of service (crash) via a signature using a large RSA key, which triggers a buffer overflow.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Apache XML Security for C++=1.6.0
Shibboleth Service Provider<=2.4.2
Shibboleth Service Provider=1.3.1
Shibboleth Service Provider=1.3.2
Shibboleth Service Provider=1.3.3
Shibboleth Service Provider=1.3.4
Shibboleth Service Provider=1.3.5
Shibboleth Service Provider=1.3f
Shibboleth Service Provider=2.0
Shibboleth Service Provider=2.1
Shibboleth Service Provider=2.2
Shibboleth Service Provider=2.2.1
Shibboleth Service Provider=2.3
Shibboleth Service Provider=2.3.1
Shibboleth Service Provider=2.4
Shibboleth Service Provider=2.4.1

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2011-2516?

    CVE-2011-2516 is categorized as a denial of service vulnerability that may lead to application crashes.

  • How do I fix CVE-2011-2516?

    To fix CVE-2011-2516, upgrade to a corrected version of Apache XML Security for C++ or Shibboleth that addresses this vulnerability.

  • Which versions are affected by CVE-2011-2516?

    CVE-2011-2516 affects Apache XML Security for C++ 1.6.0 and versions of Shibboleth before 2.4.3, including several specific 1.x and 2.x versions.

  • What type of attack does CVE-2011-2516 enable?

    CVE-2011-2516 enables remote attackers to crash the application through a crafted XML signature that triggers a buffer overflow.

  • Is CVE-2011-2516 a network-accessible vulnerability?

    Yes, CVE-2011-2516 is network-accessible as it can be exploited by remote attackers without physical access.

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