ubuntu-cve-2011-2516
Vulnerability from osv_ubuntu
Published
2011-07-11 20:55
Modified
2025-07-16 04:49
Summary
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
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"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • 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.