ubuntu-cve-2011-1756
Vulnerability from osv_ubuntu
Published
2011-06-21 02:52
Modified
2025-07-16 04:49
Summary
Details

modules/xmpp/serv_xmpp.c in Citadel 7.86 and earlier does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.

Severity
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "citadel-dbg",
            "binary_version": "8.24-1"
          },
          {
            "binary_name": "citadel-doc",
            "binary_version": "8.24-1"
          },
          {
            "binary_name": "citadel-mta",
            "binary_version": "8.24-1"
          },
          {
            "binary_name": "citadel-server",
            "binary_version": "8.24-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "citadel",
        "purl": "pkg:deb/ubuntu/citadel@8.24-1?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.24-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.16-1ubuntu1",
        "8.20-1",
        "8.22-1",
        "8.22-2"
      ]
    }
  ],
  "aliases": [],
  "details": "modules/xmpp/serv_xmpp.c in Citadel 7.86 and earlier does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.",
  "id": "UBUNTU-CVE-2011-1756",
  "modified": "2025-07-16T04:49:59Z",
  "published": "2011-06-21T02:52:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2011-1756"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2011-1756"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2011-1756"
  ],
  "withdrawn": "2025-07-18T16:42:42Z"
}



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