Unrated severityNVD Advisory· Published Jul 11, 2011· Updated Jun 16, 2026
CVE-2011-2516
CVE-2011-2516
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
18cpe:2.3:a:apache:xml_security_for_c\+\+:1.6.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:apache:xml_security_for_c\+\+:1.6.0:*:*:*:*:*:*:*
- (no CPE)range: =1.6.0
cpe:2.3:a:shibboleth:shibboleth-sp:*:*:*:*:*:*:*:*+ 14 more
- cpe:2.3:a:shibboleth:shibboleth-sp:*:*:*:*:*:*:*:*range: <=2.4.2
- cpe:2.3:a:shibboleth:shibboleth-sp:1.3.1:*:*:*:*:*:*:*
- cpe:2.3:a:shibboleth:shibboleth-sp:1.3.2:*:*:*:*:*:*:*
- cpe:2.3:a:shibboleth:shibboleth-sp:1.3.3:*:*:*:*:*:*:*
- cpe:2.3:a:shibboleth:shibboleth-sp:1.3.4:*:*:*:*:*:*:*
- cpe:2.3:a:shibboleth:shibboleth-sp:1.3.5:*:*:*:*:*:*:*
- cpe:2.3:a:shibboleth:shibboleth-sp:1.3f:*:*:*:*:*:*:*
- cpe:2.3:a:shibboleth:shibboleth-sp:2.0:*:*:*:*:*:*:*
- cpe:2.3:a:shibboleth:shibboleth-sp:2.1:*:*:*:*:*:*:*
- cpe:2.3:a:shibboleth:shibboleth-sp:2.2:*:*:*:*:*:*:*
- cpe:2.3:a:shibboleth:shibboleth-sp:2.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:shibboleth:shibboleth-sp:2.3:*:*:*:*:*:*:*
- cpe:2.3:a:shibboleth:shibboleth-sp:2.3.1:*:*:*:*:*:*:*
- cpe:2.3:a:shibboleth:shibboleth-sp:2.4:*:*:*:*:*:*:*
- cpe:2.3:a:shibboleth:shibboleth-sp:2.4.1:*:*:*:*:*:*:*
- Range: <2.4.3
Patches
Vulnerability mechanics
References
16- issues.apache.org/jira/browse/SANTUARIO-271nvdExploit
- santuario.apache.org/secadv/CVE-2011-2516.txtnvdVendor Advisory
- secunia.com/advisories/45151nvdVendor Advisory
- secunia.com/advisories/45191nvdVendor Advisory
- shibboleth.internet2.edu/secadv/secadv_20110706.txtnvdVendor Advisory
- lists.fedoraproject.org/pipermail/package-announce/2011-July/063159.htmlnvd
- lists.fedoraproject.org/pipermail/package-announce/2011-July/063229.htmlnvd
- secunia.com/advisories/45198nvd
- secunia.com/advisories/45491nvd
- www.debian.org/security/2011/dsa-2277nvd
- www.securityfocus.com/archive/1/518756/100/0/threadednvd
- www.securityfocus.com/bid/48611nvd
- www.securitytracker.com/idnvd
- exchange.xforce.ibmcloud.com/vulnerabilities/68420nvd
- lists.apache.org/thread.html/680e6938b6412e26d5446054fd31de2011d33af11786b989127d1cc3%40%3Ccommits.santuario.apache.org%3Envd
- lists.apache.org/thread.html/r1c07a561426ec5579073046ad7f4207cdcef452bb3100abaf908e0cd%40%3Ccommits.santuario.apache.org%3Envd
News mentions
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