Vulnerability-Lookup

UBUNTU-CVE-2011-2516 (CVE-2011-2516)

Vulnerability from osv_ubuntu – Published: 2011-07-11 20:55 – Updated: 2025-07-16 04:49 – Source website

Withdrawn 2025-07-18

Details

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.

Severity

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2011-2516	REPORT
	http://santuario.apache.org/secadv/CVE-2011-2516.txt	REPORT
	https://www.cve.org/CVERecord?id=CVE-2011-2516	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libapache2-mod-shib2",
            "binary_version": "2.5.2+dfsg-2"
          },
          {
            "binary_name": "libshibsp-dev",
            "binary_version": "2.5.2+dfsg-2"
          },
          {
            "binary_name": "libshibsp-doc",
            "binary_version": "2.5.2+dfsg-2"
          },
          {
            "binary_name": "libshibsp6",
            "binary_version": "2.5.2+dfsg-2"
          },
          {
            "binary_name": "shibboleth-sp2-schemas",
            "binary_version": "2.5.2+dfsg-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "shibboleth-sp2",
        "purl": "pkg:deb/ubuntu/shibboleth-sp2@2.5.2+dfsg-2?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.5.2+dfsg-2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [],
  "details": "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.",
  "id": "UBUNTU-CVE-2011-2516",
  "modified": "2025-07-16T04:49:59Z",
  "published": "2011-07-11T20:55:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2011-2516"
    },
    {
      "type": "REPORT",
      "url": "http://santuario.apache.org/secadv/CVE-2011-2516.txt"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2011-2516"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2011-2516"
  ],
  "withdrawn": "2025-07-18T16:42:43Z"
}

CVE-2011-2516 (GCVE-0-2011-2516)

Vulnerability from cvelistv5 – Published: 2011-07-11 20:00 – Updated: 2024-08-06 23:00

Summary

Severity

No CVSS data available.

CWE

Assigner

redhat redhat root

References

16 references

URL	Tags
http://www.debian.org/security/2011/dsa-2277	vendor-advisoryx_refsource_DEBIAN
http://secunia.com/advisories/45491	third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/45151	third-party-advisoryx_refsource_SECUNIA
http://www.securityfocus.com/archive/1/518756/100…	mailing-listx_refsource_BUGTRAQ
https://exchange.xforce.ibmcloud.com/vulnerabilit…	vdb-entryx_refsource_XF
https://issues.apache.org/jira/browse/SANTUARIO-271	x_refsource_CONFIRM
http://santuario.apache.org/secadv/CVE-2011-2516.txt	x_refsource_CONFIRM
http://lists.fedoraproject.org/pipermail/package-…	vendor-advisoryx_refsource_FEDORA
http://secunia.com/advisories/45198	third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/45191	third-party-advisoryx_refsource_SECUNIA
http://shibboleth.internet2.edu/secadv/secadv_201…	x_refsource_CONFIRM
http://www.securitytracker.com/id?1025755	vdb-entryx_refsource_SECTRACK
http://lists.fedoraproject.org/pipermail/package-…	vendor-advisoryx_refsource_FEDORA
http://www.securityfocus.com/bid/48611	vdb-entryx_refsource_BID
https://lists.apache.org/thread.html/680e6938b641…	mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r1c07a561426…	mailing-listx_refsource_MLIST

Date Public

2011-05-19 00:00

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

UBUNTU-CVE-2011-2516 (CVE-2011-2516)

CVE-2011-2516 (GCVE-0-2011-2516)

Tags

Sightings

Nomenclature

Related by attack behaviour