CVE-2011-2516

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 7.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2011-07-11 · updated 2026-06-16
Weakness: CWE-189

Description

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.

Affected products

Apache Xml Security For C++: 1.6.0
Shibboleth-Sp: through 2.4.2; 1.3.1, 1.3.2, 1.3.3, 1.3.4, 1.3.5, 1.3f (+8)

References

http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063159.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063229.html
http://santuario.apache.org/secadv/CVE-2011-2516.txt
http://secunia.com/advisories/45151
http://secunia.com/advisories/45191
http://secunia.com/advisories/45198
http://secunia.com/advisories/45491
http://shibboleth.internet2.edu/secadv/secadv_20110706.txt
http://www.debian.org/security/2011/dsa-2277
http://www.securityfocus.com/archive/1/518756/100/0/threaded
http://www.securityfocus.com/bid/48611
http://www.securitytracker.com/id?1025755

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