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Last updated: 5/28/2015 1:59:45 PM

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National Cyber Awareness System

Vulnerability Summary for CVE-2011-2516

Original release date: 07/11/2011
Last revised: 10/31/2012


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.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.0 (MEDIUM) (AV:N/AC:L/Au:N/C:N/I:N/A:P) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: SECTRACK
Name: 1025755
External Source: FEDORA
Name: FEDORA-2011-9494
External Source: CONFIRM
Name: https://issues.apache.org/jira/browse/SANTUARIO-271
External Source: BID
Name: 48611
External Source: FEDORA
Name: FEDORA-2011-9501
External Source: CONFIRM
Name: http://shibboleth.internet2.edu/secadv/secadv_20110706.txt
Type: Advisory
External Source: DEBIAN
Name: DSA-2277
External Source: XF
Name: apache-xml-dos(68420)
External Source: CONFIRM
Name: http://santuario.apache.org/secadv/CVE-2011-2516.txt
Type: Advisory
External Source: BUGTRAQ
Name: 20110707 Security Advisory: CVE-2011-2516

Technical Details

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