CVE-2011-2516
MEDIUM · CVSS 5.0EPSS 7.7%EU EUVD
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.
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- Weakness (CWE)
- CWE-189
- EPSS score
- 7.7% (95th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2011-2501)
- Published
- July 11, 2011
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2011-2501 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- apache / xml security for c++
- shibboleth / shibboleth-sp
- shibboleth / shibboleth-sp
- shibboleth / shibboleth-sp
- shibboleth / shibboleth-sp
- shibboleth / shibboleth-sp
- shibboleth / shibboleth-sp
- shibboleth / shibboleth-sp
- shibboleth / shibboleth-sp
- shibboleth / shibboleth-sp
- shibboleth / shibboleth-sp
- shibboleth / shibboleth-sp
- shibboleth / shibboleth-sp
- shibboleth / shibboleth-sp
- shibboleth / shibboleth-sp
- shibboleth / shibboleth-sp
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(Vendor Advisory)
- http://secunia.com/advisories/45151(Vendor Advisory)
- http://secunia.com/advisories/45191(Vendor Advisory)
- http://secunia.com/advisories/45198
- http://secunia.com/advisories/45491
- http://shibboleth.internet2.edu/secadv/secadv_20110706.txt(Vendor Advisory)
- 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
- https://exchange.xforce.ibmcloud.com/vulnerabilities/68420
- https://issues.apache.org/jira/browse/SANTUARIO-271(Exploit)
- https://lists.apache.org/thread.html/680e6938b6412e26d5446054fd31de2011d33af11786b989127d1cc3%40%3Ccommits.santuario.apache.org%3E
- https://lists.apache.org/thread.html/r1c07a561426ec5579073046ad7f4207cdcef452bb3100abaf908e0cd%40%3Ccommits.santuario.apache.org%3E
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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