FKIE_CVE-2011-1756

Vulnerability from fkie_nvd - Published: 2011-06-21 02:52 - Updated: 2026-06-16 23:29
Severity
Summary
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.
References
secalert@redhat.comhttp://code.citadel.org/cgit.cgi/git.citadel.org/commit/?id=27c991cc2059f5530d3d4e9689dc976b745f5b0cPatch
secalert@redhat.comhttp://code.citadel.org/cgit.cgi/git.citadel.org/commit/?id=95040add546a705cc2d1d8f16293141f9f9845a6Patch
secalert@redhat.comhttp://packages.debian.org/changelogs/pool/main/c/citadel/citadel_7.37-8+lenny1/changelog
secalert@redhat.comhttp://packages.debian.org/changelogs/pool/main/c/citadel/citadel_7.83-2squeeze2/changelog
secalert@redhat.comhttp://secunia.com/advisories/44788Vendor Advisory
secalert@redhat.comhttp://security.debian.org/debian-security/pool/updates/main/c/citadel/citadel_7.83-2squeeze2.diff.gzPatch
secalert@redhat.comhttp://www.debian.org/security/2011/dsa-2250
secalert@redhat.comhttp://www.securityfocus.com/bid/48071
af854a3a-2127-422b-91ae-364da2661108http://code.citadel.org/cgit.cgi/git.citadel.org/commit/?id=27c991cc2059f5530d3d4e9689dc976b745f5b0cPatch
af854a3a-2127-422b-91ae-364da2661108http://code.citadel.org/cgit.cgi/git.citadel.org/commit/?id=95040add546a705cc2d1d8f16293141f9f9845a6Patch
af854a3a-2127-422b-91ae-364da2661108http://packages.debian.org/changelogs/pool/main/c/citadel/citadel_7.37-8+lenny1/changelog
af854a3a-2127-422b-91ae-364da2661108http://packages.debian.org/changelogs/pool/main/c/citadel/citadel_7.83-2squeeze2/changelog
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/44788Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://security.debian.org/debian-security/pool/updates/main/c/citadel/citadel_7.83-2squeeze2.diff.gzPatch
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2011/dsa-2250
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/48071
Impacted products
Vendor Product Version
citadel citadel *
citadel citadel 7.11
citadel citadel 7.50
citadel citadel 7.60
citadel citadel 7.80
citadel citadel 7.81
citadel citadel 7.82
citadel citadel 7.84
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:citadel:citadel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "407C3B23-6D35-4B96-8CC8-639AD6966893",
              "versionEndIncluding": "7.86",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citadel:citadel:7.11:*:*:*:*:*:*:*",
              "matchCriteriaId": "CA3E5264-B914-4223-B86F-EA9EB2EFD052",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citadel:citadel:7.50:*:*:*:*:*:*:*",
              "matchCriteriaId": "8C08D806-1A55-4396-A87F-E8B9A75B8996",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citadel:citadel:7.60:*:*:*:*:*:*:*",
              "matchCriteriaId": "2038578C-B143-4B2F-B037-026F9DE3A59C",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citadel:citadel:7.80:*:*:*:*:*:*:*",
              "matchCriteriaId": "04636EB6-6611-4DAF-AA52-5AA63495F719",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citadel:citadel:7.81:*:*:*:*:*:*:*",
              "matchCriteriaId": "D9665946-772A-47DD-B8C9-9E745311B4CA",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citadel:citadel:7.82:*:*:*:*:*:*:*",
              "matchCriteriaId": "1B6F5975-23E2-473D-BA8E-C51D564AA2F7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citadel:citadel:7.84:*:*:*:*:*:*:*",
              "matchCriteriaId": "EAF1B236-2550-4F40-9352-1C845688D320",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "El archivo modules/xmpp/serv_xmpp.c en Citadel versi\u00f3n 7.86 y anteriores, no detectan apropiadamente la recursi\u00f3n durante la expansi\u00f3n de la entidad, lo que permite a los atacantes remotos causar una denegaci\u00f3n de servicio (consumo de memoria y CPU) por medio  de un documento XML especialmente dise\u00f1ado que contiene un gran n\u00famero de referencias de entidades anidadas, un problema similar a CVE-2003-1564."
    }
  ],
  "id": "CVE-2011-1756",
  "lastModified": "2026-06-16T23:29:58.023",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "2011-06-21T02:52:43.607",
  "references": [
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Patch"
      ],
      "url": "http://code.citadel.org/cgit.cgi/git.citadel.org/commit/?id=27c991cc2059f5530d3d4e9689dc976b745f5b0c"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Patch"
      ],
      "url": "http://code.citadel.org/cgit.cgi/git.citadel.org/commit/?id=95040add546a705cc2d1d8f16293141f9f9845a6"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://packages.debian.org/changelogs/pool/main/c/citadel/citadel_7.37-8+lenny1/changelog"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://packages.debian.org/changelogs/pool/main/c/citadel/citadel_7.83-2squeeze2/changelog"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://secunia.com/advisories/44788"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Patch"
      ],
      "url": "http://security.debian.org/debian-security/pool/updates/main/c/citadel/citadel_7.83-2squeeze2.diff.gz"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.debian.org/security/2011/dsa-2250"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.securityfocus.com/bid/48071"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "http://code.citadel.org/cgit.cgi/git.citadel.org/commit/?id=27c991cc2059f5530d3d4e9689dc976b745f5b0c"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "http://code.citadel.org/cgit.cgi/git.citadel.org/commit/?id=95040add546a705cc2d1d8f16293141f9f9845a6"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://packages.debian.org/changelogs/pool/main/c/citadel/citadel_7.37-8+lenny1/changelog"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://packages.debian.org/changelogs/pool/main/c/citadel/citadel_7.83-2squeeze2/changelog"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://secunia.com/advisories/44788"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "http://security.debian.org/debian-security/pool/updates/main/c/citadel/citadel_7.83-2squeeze2.diff.gz"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.debian.org/security/2011/dsa-2250"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.securityfocus.com/bid/48071"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-399"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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