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
Published Jul 11, 2011
5.0
MEDIUMCVSS 2.0
EPSS 7.72%
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
No data.
- 1.6.0
- ≤ 2.4.2
- 1.3.1
- 1.3.2
- 1.3.3
- 1.3.4
- 1.3.5
- 1.3f
- 2.0
- 2.1
- 2.2
- 2.2.1
- 2.3
- 2.3.1
- 2.4
- 2.4.1
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.72% (0.07720) | 94.44th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.72% (0.07720) | 93.83th | v5 (v2026.06.15) |
| Mar 30, 2025 | 7.30% (0.07303) | 90.81th | v4 (v2025.03.14) |
| Mar 29, 2025 | 9.83% (0.09830) | 88.20th | v4 (v2025.03.14) |
| Mar 17, 2025 | 7.30% (0.07303) | 91.01th | v4 (v2025.03.14) |
| Dec 17, 2024 | 10.42% (0.10425) | 94.99th | v3 (v2023.03.01) |
| Jan 9, 2024 | 2.58% (0.02584) | 89.15th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.37% (0.02368) | 88.10th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.39% (0.06394) | 90.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 6.39% (0.06394) | 90.10th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.39% (0.06394) | 77.96th | v2 (v2022.01.01) |
References (16)
- http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063159.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063229.html vendor-advisoryx_refsource_FEDORA
- http://santuario.apache.org/secadv/CVE-2011-2516.txt x_refsource_CONFIRMVendor Advisory
- http://secunia.com/advisories/45151 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/45191 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/45198 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/45491 third-party-advisoryx_refsource_SECUNIA
- http://shibboleth.internet2.edu/secadv/secadv_20110706.txt x_refsource_CONFIRMVendor Advisory
- http://www.debian.org/security/2011/dsa-2277 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/archive/1/518756/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/48611 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1025755 vdb-entryx_refsource_SECTRACK
- https://exchange.xforce.ibmcloud.com/vulnerabilities/68420 vdb-entryx_refsource_XF
- https://issues.apache.org/jira/browse/SANTUARIO-271 x_refsource_CONFIRMExploit
- https://lists.apache.org/thread.html/680e6938b6412e26d5446054fd31de2011d33af11786b989127d1cc3%40%3Ccommits.santuario.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r1c07a561426ec5579073046ad7f4207cdcef452bb3100abaf908e0cd%40%3Ccommits.santuario.apache.org%3E mailing-listx_refsource_MLIST
Change history (0)
No recorded changes yet.