FKIE_CVE-2014-6053

Vulnerability from fkie_nvd - Published: 2014-12-15 18:59 - Updated: 2026-06-17 00:12
Severity
Summary
The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier does not properly handle attempts to send a large amount of ClientCutText data, which allows remote attackers to cause a denial of service (memory consumption or daemon crash) via a crafted message that is processed by using a single unchecked malloc.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
cve@mitre.orghttp://seclists.org/oss-sec/2014/q3/639Mailing List, Third Party Advisory
cve@mitre.orghttp://secunia.com/advisories/61506
cve@mitre.orghttp://secunia.com/advisories/61682
cve@mitre.orghttp://ubuntu.com/usn/usn-2365-1Third Party Advisory
cve@mitre.orghttp://www.debian.org/security/2014/dsa-3081Third Party Advisory
cve@mitre.orghttp://www.ocert.org/advisories/ocert-2014-007.htmlThird Party Advisory, US Government Resource
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2014/09/25/11Mailing List, Third Party Advisory
cve@mitre.orghttps://github.com/newsoft/libvncserver/commit/6037a9074d52b1963c97cb28ea1096c7c14cbf28Issue Tracking, Patch
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2019/11/msg00032.html
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2019/12/msg00028.html
cve@mitre.orghttps://security.gentoo.org/glsa/201507-07
cve@mitre.orghttps://usn.ubuntu.com/4573-1/
cve@mitre.orghttps://usn.ubuntu.com/4587-1/
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/oss-sec/2014/q3/639Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/61506
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/61682
af854a3a-2127-422b-91ae-364da2661108http://ubuntu.com/usn/usn-2365-1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2014/dsa-3081Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.ocert.org/advisories/ocert-2014-007.htmlThird Party Advisory, US Government Resource
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2014/09/25/11Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/newsoft/libvncserver/commit/6037a9074d52b1963c97cb28ea1096c7c14cbf28Issue Tracking, Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201507-07
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4573-1/
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4587-1/
Impacted products
Vendor Product Version
libvncserver libvncserver *
canonical ubuntu_linux 12.04
canonical ubuntu_linux 14.04
debian debian_linux 7.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:libvncserver:libvncserver:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E7FA4C02-01AA-417C-BB93-14A18D2D3768",
              "versionEndIncluding": "0.9.9",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*",
              "matchCriteriaId": "B6B7CAD7-9D4E-4FDB-88E3-1E583210A01F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
              "matchCriteriaId": "B5A6F2F3-4894-4392-8296-3B8DD2679084",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "16F59A04-14CF-49E2-9973-645477EA09DA",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier does not properly handle attempts to send a large amount of ClientCutText data, which allows remote attackers to cause a denial of service (memory consumption or daemon crash) via a crafted message that is processed by using a single unchecked malloc."
    },
    {
      "lang": "es",
      "value": "La funci\u00f3n rfbProcessClientNormalMessage en libvncserver/rfbserver.c en LibVNCServer 0.9.9 y anteriores no maneja correctamente los intentos de enviar una cantidad grande de datos ClientCutText, lo que permite a atacantes remotos causar una denegaci\u00f3n de servicio (consumo de memoria o ca\u00edda del demonio) a trav\u00e9s de un mensaje manipulado que est\u00e1 procesado mediante el uso de un \u00fanico malloc no comprobado."
    }
  ],
  "id": "CVE-2014-6053",
  "lastModified": "2026-06-17T00:12:31.213",
  "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": "2014-12-15T18:59:05.643",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://seclists.org/oss-sec/2014/q3/639"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://secunia.com/advisories/61506"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://secunia.com/advisories/61682"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://ubuntu.com/usn/usn-2365-1"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://www.debian.org/security/2014/dsa-3081"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory",
        "US Government Resource"
      ],
      "url": "http://www.ocert.org/advisories/ocert-2014-007.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2014/09/25/11"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "url": "https://github.com/newsoft/libvncserver/commit/6037a9074d52b1963c97cb28ea1096c7c14cbf28"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://security.gentoo.org/glsa/201507-07"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://usn.ubuntu.com/4573-1/"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://usn.ubuntu.com/4587-1/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://seclists.org/oss-sec/2014/q3/639"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://secunia.com/advisories/61506"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://secunia.com/advisories/61682"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://ubuntu.com/usn/usn-2365-1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://www.debian.org/security/2014/dsa-3081"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "US Government Resource"
      ],
      "url": "http://www.ocert.org/advisories/ocert-2014-007.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2014/09/25/11"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "url": "https://github.com/newsoft/libvncserver/commit/6037a9074d52b1963c97cb28ea1096c7c14cbf28"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html"
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://security.gentoo.org/glsa/201507-07"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://usn.ubuntu.com/4573-1/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://usn.ubuntu.com/4587-1/"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-19"
        }
      ],
      "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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  • 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.



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