FKIE_CVE-2011-1753

Vulnerability from fkie_nvd - Published: 2011-06-21 02:52 - Updated: 2026-06-16 23:29
Severity
Summary
expat_erl.c in ejabberd before 2.1.7 and 3.x before 3.0.0-alpha-3, and exmpp before 0.9.7, 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://lists.fedoraproject.org/pipermail/package-announce/2011-June/062099.html
secalert@redhat.comhttp://lists.fedoraproject.org/pipermail/package-announce/2011-June/062145.html
secalert@redhat.comhttp://secunia.com/advisories/44765Vendor Advisory
secalert@redhat.comhttp://secunia.com/advisories/44807Vendor Advisory
secalert@redhat.comhttp://secunia.com/advisories/45120
secalert@redhat.comhttp://www.debian.org/security/2011/dsa-2248
secalert@redhat.comhttp://www.ejabberd.im/ejabberd-2.1.7Patch
secalert@redhat.comhttp://www.process-one.net/en/ejabberd/release_notes/release_note_ejabberd_2.1.7/
secalert@redhat.comhttp://www.securityfocus.com/bid/48072
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=700454
secalert@redhat.comhttps://exchange.xforce.ibmcloud.com/vulnerabilities/67769
secalert@redhat.comhttps://git.process-one.net/ejabberd/mainline/commit/bd1df027c622e1f96f9eeaac612a6a956c1ff0b6Patch
af854a3a-2127-422b-91ae-364da2661108http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062099.html
af854a3a-2127-422b-91ae-364da2661108http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062145.html
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/44765Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/44807Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/45120
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2011/dsa-2248
af854a3a-2127-422b-91ae-364da2661108http://www.ejabberd.im/ejabberd-2.1.7Patch
af854a3a-2127-422b-91ae-364da2661108http://www.process-one.net/en/ejabberd/release_notes/release_note_ejabberd_2.1.7/
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/48072
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=700454
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/67769
af854a3a-2127-422b-91ae-364da2661108https://git.process-one.net/ejabberd/mainline/commit/bd1df027c622e1f96f9eeaac612a6a956c1ff0b6Patch
Impacted products
Vendor Product Version
process-one ejabberd *
process-one ejabberd 0.9
process-one ejabberd 0.9.1
process-one ejabberd 0.9.8
process-one ejabberd 1.0.0
process-one ejabberd 1.1.0
process-one ejabberd 1.1.1
process-one ejabberd 1.1.1.0
process-one ejabberd 1.1.1.1
process-one ejabberd 1.1.2
process-one ejabberd 1.1.3
process-one ejabberd 1.1.14
process-one ejabberd 2.0.0
process-one ejabberd 2.0.0
process-one ejabberd 2.0.0
process-one ejabberd 2.0.1_2
process-one ejabberd 2.0.2
process-one ejabberd 2.0.3
process-one ejabberd 2.0.4
process-one ejabberd 2.0.5
process-one ejabberd 2.1.0
process-one ejabberd 2.1.1
process-one ejabberd 2.1.2
process-one ejabberd 2.1.3
process-one ejabberd 2.1.4
process-one ejabberd 2.1.5
process-one ejabberd 3.0.0
process-one ejabberd 3.0.0
process-one exmpp *
process-one exmpp 0.9.1
process-one exmpp 0.9.2
process-one exmpp 0.9.3
process-one exmpp 0.9.4
process-one exmpp 0.9.5
To clipboard 

{
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "expat_erl.c in ejabberd before 2.1.7 and 3.x before 3.0.0-alpha-3, and exmpp before 0.9.7, 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": "expat_erl.c en ejabberd v2.1.7 y v3.x antes de v3.0.0-alpha-3, y exmpp antes de v0.9.7, no detecta correctamente la recursividad durante la expansi\u00f3n de la entidad, lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio ( la memoria  y el consumo de CPU ) a trav\u00e9s de un documento XML manipulado que contiene un gran n\u00famero de referencias a entidades anidadas, un problema similar a CVE-2003-1564."
    }
  ],
  "id": "CVE-2011-1753",
  "lastModified": "2026-06-16T23:29:57.627",
  "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": "2011-06-21T02:52:42.763",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062099.html"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062145.html"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://secunia.com/advisories/44765"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://secunia.com/advisories/44807"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://secunia.com/advisories/45120"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.debian.org/security/2011/dsa-2248"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Patch"
      ],
      "url": "http://www.ejabberd.im/ejabberd-2.1.7"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.process-one.net/en/ejabberd/release_notes/release_note_ejabberd_2.1.7/"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.securityfocus.com/bid/48072"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=700454"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/67769"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Patch"
      ],
      "url": "https://git.process-one.net/ejabberd/mainline/commit/bd1df027c622e1f96f9eeaac612a6a956c1ff0b6"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062099.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062145.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://secunia.com/advisories/44765"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://secunia.com/advisories/44807"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://secunia.com/advisories/45120"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.debian.org/security/2011/dsa-2248"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "http://www.ejabberd.im/ejabberd-2.1.7"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.process-one.net/en/ejabberd/release_notes/release_note_ejabberd_2.1.7/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.securityfocus.com/bid/48072"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=700454"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/67769"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.process-one.net/ejabberd/mainline/commit/bd1df027c622e1f96f9eeaac612a6a956c1ff0b6"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-399"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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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.