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CVE-2011-4100

Status: ModifiedMedium (4.3)—

The csnStreamDissector function in epan/dissectors/packet-csn1.c in the CSN.1 dissector in Wireshark 1.6.x before 1.6.3 does not initialize a certain variable, which allows remote attackers to cause a denial of service (application crash) via a malformed packet.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Wireshark — Wireshark

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2011-4100",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2011-11-03T15:55:00.950",
  "references": [
    {
      "url": "http://anonsvn.wireshark.org/viewvc?view=revision&revision=39140",
      "tags": [
        "Patch"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://openwall.com/lists/oss-security/2011/11/01/9",
      "tags": [
        "Patch"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://osvdb.org/76768",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/46644",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/50479",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.wireshark.org/security/wnpa-sec-2011-17.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6351",
      "tags": [
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      "source": "secalert@redhat.com"
    },
    {
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      "tags": [
        "Patch"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/71090",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14833",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://anonsvn.wireshark.org/viewvc?view=revision&revision=39140",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
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      "tags": [
        "Patch"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://osvdb.org/76768",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/46644",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/50479",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.wireshark.org/security/wnpa-sec-2011-17.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6351",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=750643",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/71090",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14833",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-399"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The csnStreamDissector function in epan/dissectors/packet-csn1.c in the CSN.1 dissector in Wireshark 1.6.x before 1.6.3 does not initialize a certain variable, which allows remote attackers to cause a denial of service (application crash) via a malformed packet."
    },
    {
      "lang": "es",
      "value": "La función csnStreamDissector en epan/dissectors/packet-csn1.c en el CSN.1 dissector en Wireshark v1.6.x anterior a v1.6.3 no inicializa una determinada variable, que permite a atacantes remotos provocar una denegación de servicio (caída de aplicación) a través de un paquete con formato erróneo."
    }
  ],
  "lastModified": "2026-06-16T23:34:25.463",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:wireshark:wireshark:1.6.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0738C9A6-0370-447D-91E6-EB59ECC92224"
            },
            {
              "criteria": "cpe:2.3:a:wireshark:wireshark:1.6.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "05A83A69-D49D-48D0-8FFE-4887F15ACD33"
            },
            {
              "criteria": "cpe:2.3:a:wireshark:wireshark:1.6.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B9CA0830-9AFE-499F-903F-D9C3B5CCC982"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}