CVE-2011-2516
Off-by-one error in the XML signature feature in Apache XML Security for C++ 1.6.0, as used in...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2011-2516- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-189
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2011-2516- Updated
- 2026-11-02
EUVDEUVD-2011-2501 No score
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.
- Record
EUVD-2011-2501- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2jmv-v2x6-mmv8 No score
Off-by-one error in the XML signature feature in Apache XML Security for C++ 1.6.0, as used in...
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.
- Record
GHSA-2jmv-v2x6-mmv8- Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2011-2516- Updated
- 2026-11-02
OSVDEBIAN-CVE-2011-2516 No score
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.
- Record
DEBIAN-CVE-2011-2516- Updated
- 2026-11-02
OSVUBUNTU-CVE-2011-2516 No score
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.
- Record
UBUNTU-CVE-2011-2516- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
xml-security-cDebian:12 |
before 1.6.1-1 | 1.6.1-1 |
xml-security-cDebian:13 |
before 1.6.1-1 | 1.6.1-1 |
xml-security-cDebian:14 |
before 1.6.1-1 | 1.6.1-1 |
xml-security-cDebian:5.0 |
before 1.4.0-3+lenny3, plus listed versions 1.4.0-31.4.0-3+lenny2 |
1.4.0-3+lenny3 |
xml-security-cDebian:6.0 |
before 1.5.1-3+squeeze1, plus listed versions 1.5.1-31.5.1-3+squeeze1~bpo50+1 |
1.5.1-3+squeeze1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2011-2516 is a medium vulnerability (CVSS 5.0) in Apache Xml Security For C\+\+, published July 10, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 7.72%, the 94th percentile. Fixed in xml-security-c 1.6.1-1.
References
debian.org/security/2011/dsa-2277
secunia.com/advisories/45491
securityfocus.com/archive/1/518756/100/0/threaded
exchange.xforce.ibmcloud.com/vulnerabilities/68420
issues.apache.org/jira/browse/SANTUARIO-271
Show 17 moreShow less
santuario.apache.org/secadv/CVE-2011-2516.txt
lists.fedoraproject.org/pipermail/package-announce/2011-July/063159.html
shibboleth.internet2.edu/secadv/secadv_20110706.txt
securitytracker.com/id?1025755
lists.apache.org/thread.html/680e6938b6412e26d5446054fd31de2011d33af11786b989127d1cc3%40%3Ccommits.santuario.apache.org%3E
nvd.nist.gov/vuln/detail/CVE-2011-2516
github.com/advisories/GHSA-2jmv-v2x6-mmv8
security-tracker.debian.org/tracker/CVE-2011-2516
ubuntu.com/security/CVE-2011-2516
cve.org/CVERecord?id=CVE-2011-2516