FKIE_CVE-2009-2473

Vulnerability from fkie_nvd - Published: 2009-08-21 17:30 - Updated: 2026-06-16 23:09
Severity
Summary
neon before 0.28.6, when expat is used, does not properly detect recursion during entity expansion, which allows context-dependent 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.apple.com/archives/security-announce/2010//Nov/msg00000.html
secalert@redhat.comhttp://lists.manyfish.co.uk/pipermail/neon/2009-August/001044.html
secalert@redhat.comhttp://lists.manyfish.co.uk/pipermail/neon/2009-August/001045.html
secalert@redhat.comhttp://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html
secalert@redhat.comhttp://rhn.redhat.com/errata/RHSA-2013-0131.html
secalert@redhat.comhttp://secunia.com/advisories/36371Vendor Advisory
secalert@redhat.comhttp://support.apple.com/kb/HT4435
secalert@redhat.comhttp://www.mandriva.com/security/advisories?name=MDVSA-2009:221
secalert@redhat.comhttp://www.vupen.com/english/advisories/2009/2341Patch, Vendor Advisory
secalert@redhat.comhttps://exchange.xforce.ibmcloud.com/vulnerabilities/52633
secalert@redhat.comhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9461
secalert@redhat.comhttps://www.redhat.com/archives/fedora-package-announce/2009-August/msg00924.html
secalert@redhat.comhttps://www.redhat.com/archives/fedora-package-announce/2009-August/msg00945.html
af854a3a-2127-422b-91ae-364da2661108http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html
af854a3a-2127-422b-91ae-364da2661108http://lists.manyfish.co.uk/pipermail/neon/2009-August/001044.html
af854a3a-2127-422b-91ae-364da2661108http://lists.manyfish.co.uk/pipermail/neon/2009-August/001045.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html
af854a3a-2127-422b-91ae-364da2661108http://rhn.redhat.com/errata/RHSA-2013-0131.html
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/36371Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://support.apple.com/kb/HT4435
af854a3a-2127-422b-91ae-364da2661108http://www.mandriva.com/security/advisories?name=MDVSA-2009:221
af854a3a-2127-422b-91ae-364da2661108http://www.vupen.com/english/advisories/2009/2341Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/52633
af854a3a-2127-422b-91ae-364da2661108https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9461
af854a3a-2127-422b-91ae-364da2661108https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00924.html
af854a3a-2127-422b-91ae-364da2661108https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00945.html
Impacted products
Vendor Product Version
webdav neon 0.28.6
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:webdav:neon:0.28.6:*:*:*:*:*:*:*",
              "matchCriteriaId": "632E9CF9-8652-4FCB-B387-467B137C8CC7",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "neon before 0.28.6, when expat is used, does not properly detect recursion during entity expansion, which allows context-dependent 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": "neon, en versiones anteriores a la 0.28.6, cuando se usa expat, no detecta adecuadamente la recursividad en la expansi\u00f3n de una entidad, esto permite a atacantes dependientes del contexto provocar una denegaci\u00f3n de servicio (consumo de la memoria y CPU), mediante un documento XML manipulado que contiene un gran n\u00famero de referencias anidadas a entidades, una cuesti\u00f3n similar a CVE-2003-1564."
    }
  ],
  "id": "CVE-2009-2473",
  "lastModified": "2026-06-16T23:09:31.587",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.3,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
      }
    ]
  },
  "published": "2009-08-21T17:30:00.327",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://lists.manyfish.co.uk/pipermail/neon/2009-August/001044.html"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://lists.manyfish.co.uk/pipermail/neon/2009-August/001045.html"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://rhn.redhat.com/errata/RHSA-2013-0131.html"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://secunia.com/advisories/36371"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://support.apple.com/kb/HT4435"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2009:221"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://www.vupen.com/english/advisories/2009/2341"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/52633"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9461"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00924.html"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00945.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://lists.manyfish.co.uk/pipermail/neon/2009-August/001044.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://lists.manyfish.co.uk/pipermail/neon/2009-August/001045.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://rhn.redhat.com/errata/RHSA-2013-0131.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://secunia.com/advisories/36371"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://support.apple.com/kb/HT4435"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2009:221"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://www.vupen.com/english/advisories/2009/2341"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/52633"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9461"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00924.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00945.html"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vendorComments": [
    {
      "comment": "Updated neon packages for Red Hat Enterprise Linux 4 and 5 were released via:\nhttps://rhn.redhat.com/errata/RHSA-2009-1452.html\n\nEmbedded copy of the neon library is included in the versions of gnome-vfs2 packages as shipped with Red Hat Enteprise Linux 4 and Red Hat Enteprise Linux 5.  The Red Hat Security Response Team has rated this issue as having low security impact on gnome-vfs2, future updates may address this flaw.",
      "lastModified": "2009-09-22T00:00:00",
      "organization": "Red Hat"
    }
  ],
  "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

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.
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  • 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.



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.