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italc, krfb and 3 more products — security advisory

Type: advisorySources: OSVAdvisory ID: UBUNTU-CVE-2014-6053

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.

Products
italc, krfb, libvncserver, tightvnc, vino
Affected versions
0.9.9+dfsg-1, 0.9.9+dfsg-1ubuntu1, 1.3.10-0ubuntu2, 1.3.10-0ubuntu3, 1.3.10-0ubuntu4, 1.3.10-0ubuntu5, 1.3.9-6.4, 1.3.9-6.4ubuntu1, 1:1.3.10-10, 1:1.3.10-10build1, 1:1.3.10-11, 1:1.3.10-3, 1:1.3.10-5, 1:1.3.10-7, 1:1.3.10-7build1, 1:1.3.10-7build2, 1:1.3.10-8, 1:1.3.10-9, 1:2.0.2+dfsg1-3, 1:2.0.2+dfsg1-4, 3.22.0-2ubuntu1, 3.22.0-3ubuntu1, 3.22.0-5ubuntu2, 3.8.1-0ubuntu12, 3.8.1-0ubuntu6, 3.8.1-0ubuntu7, 3.8.1-0ubuntu8, 3.8.1-0ubuntu9, 3.8.1-0ubuntu9.1, 3.8.1-0ubuntu9.2, 4:4.11.2-0ubuntu1, 4:4.11.80-0ubuntu1, 4:4.11.95-0ubuntu1, 4:4.11.97-0ubuntu1, 4:4.12.0-0ubuntu1, 4:4.12.1-0ubuntu1, 4:4.12.2-0ubuntu1, 4:4.12.3-0ubuntu1, 4:4.12.90-0ubuntu1, 4:4.12.95-0ubuntu1, 4:4.12.97-0ubuntu1, 4:4.13.0-0ubuntu1, 4:4.13.0-0ubuntu1.1, 4:4.13.3-0ubuntu1
Fixed versions
0.9.9+dfsg-1ubuntu1.1, 1.3.9-6.5+deb8u1build0.14.04.1~esm1, 1:2.0.2+dfsg1-4ubuntu0.1, 3.22.0-3ubuntu1.1, 3.22.0-5ubuntu2.1, 3.8.1-0ubuntu9.3, 4:4.13.3-0ubuntu1.1
CVEs
CVE-2014-6053
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 00:20 UTC · Revision 1

Source evidence

UBUNTU-CVE-2014-6053

core-osv · Original source

Published 24 Sept 2014, 00:00 UTC

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.

osv:UBUNTU-CVE-2014-6053

krfb

Fixed versions: 4:4.13.3-0ubuntu1.1

libvncserver

Fixed versions: 0.9.9+dfsg-1ubuntu1.1

tightvnc

Fixed versions: 1.3.9-6.5+deb8u1build0.14.04.1~esm1

italc

Fixed versions: 1:2.0.2+dfsg1-4ubuntu0.1

vino

Fixed versions: 3.8.1-0ubuntu9.3

tightvnc

Fixed versions: Not specified

vino

Fixed versions: 3.22.0-3ubuntu1.1

tightvnc

Fixed versions: Not specified

vino

Fixed versions: 3.22.0-5ubuntu2.1

tightvnc

Fixed versions: Not specified

tightvnc

Fixed versions: Not specified

tightvnc

Fixed versions: Not specified

tightvnc

Fixed versions: Not specified

tightvnc

Fixed versions: Not specified

tightvnc

Fixed versions: Not specified

Complete source record
{
  "id": "189f37176defa4bbddd3881885415dd6d063849e590685d5ba8ba6d62299b093",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2014-6053",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2014-6053",
    "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.",
    "evidence": "osv:UBUNTU-CVE-2014-6053",
    "products": [
      {
        "name": {
          "value": "krfb",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "4:4.13.3-0ubuntu1.1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "4:4.11.2-0ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4:4.11.80-0ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4:4.11.95-0ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4:4.11.97-0ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4:4.12.0-0ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4:4.12.1-0ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4:4.12.2-0ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4:4.12.3-0ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4:4.12.90-0ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4:4.12.95-0ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4:4.12.97-0ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4:4.13.0-0ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4:4.13.0-0ubuntu1.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4:4.13.3-0ubuntu1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libvncserver",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.9.9+dfsg-1ubuntu1.1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "0.9.9+dfsg-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "0.9.9+dfsg-1ubuntu1",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tightvnc",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.3.9-6.5+deb8u1build0.14.04.1~esm1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "1.3.9-6.4",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.3.9-6.4ubuntu1",
            "evidence": "/affected/2/versions"
          }
        ]
      },
      {
        "name": {
          "value": "italc",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:2.0.2+dfsg1-4ubuntu0.1",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "1:2.0.2+dfsg1-3",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "1:2.0.2+dfsg1-4",
            "evidence": "/affected/3/versions"
          }
        ]
      },
      {
        "name": {
          "value": "vino",
          "evidence": "/affected/4/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.8.1-0ubuntu9.3",
            "evidence": "/affected/4/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "3.8.1-0ubuntu6",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "3.8.1-0ubuntu7",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "3.8.1-0ubuntu8",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "3.8.1-0ubuntu9",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "3.8.1-0ubuntu9.1",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "3.8.1-0ubuntu9.2",
            "evidence": "/affected/4/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tightvnc",
          "evidence": "/affected/5/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.3.10-0ubuntu2",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "1.3.10-0ubuntu3",
            "evidence": "/affected/5/versions"
          }
        ]
      },
      {
        "name": {
          "value": "vino",
          "evidence": "/affected/6/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.22.0-3ubuntu1.1",
            "evidence": "/affected/6/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "3.8.1-0ubuntu12",
            "evidence": "/affected/6/versions"
          },
          {
            "value": "3.22.0-2ubuntu1",
            "evidence": "/affected/6/versions"
          },
          {
            "value": "3.22.0-3ubuntu1",
            "evidence": "/affected/6/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tightvnc",
          "evidence": "/affected/7/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.3.10-0ubuntu3",
            "evidence": "/affected/7/versions"
          },
          {
            "value": "1.3.10-0ubuntu4",
            "evidence": "/affected/7/versions"
          }
        ]
      },
      {
        "name": {
          "value": "vino",
          "evidence": "/affected/8/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.22.0-5ubuntu2.1",
            "evidence": "/affected/8/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "3.22.0-5ubuntu2",
            "evidence": "/affected/8/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tightvnc",
          "evidence": "/affected/9/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.3.10-0ubuntu5",
            "evidence": "/affected/9/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tightvnc",
          "evidence": "/affected/10/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1:1.3.10-3",
            "evidence": "/affected/10/versions"
          },
          {
            "value": "1:1.3.10-5",
            "evidence": "/affected/10/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tightvnc",
          "evidence": "/affected/11/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1:1.3.10-7",
            "evidence": "/affected/11/versions"
          },
          {
            "value": "1:1.3.10-7build1",
            "evidence": "/affected/11/versions"
          },
          {
            "value": "1:1.3.10-7build2",
            "evidence": "/affected/11/versions"
          },
          {
            "value": "1:1.3.10-8",
            "evidence": "/affected/11/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tightvnc",
          "evidence": "/affected/12/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1:1.3.10-9",
            "evidence": "/affected/12/versions"
          },
          {
            "value": "1:1.3.10-10",
            "evidence": "/affected/12/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tightvnc",
          "evidence": "/affected/13/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1:1.3.10-10build1",
            "evidence": "/affected/13/versions"
          },
          {
            "value": "1:1.3.10-11",
            "evidence": "/affected/13/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tightvnc",
          "evidence": "/affected/14/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1:1.3.10-10",
            "evidence": "/affected/14/versions"
          },
          {
            "value": "1:1.3.10-10build1",
            "evidence": "/affected/14/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "UBUNTU-CVE-2014-6053",
      "aliases": [
        "UBUNTU-CVE-2014-6053"
      ],
      "metrics": [
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "4:4.13.3-0ubuntu1.1"
                }
              ]
            }
          ],
          "package": {
            "name": "krfb",
            "purl": "pkg:deb/ubuntu/krfb?arch=source&distro=trusty",
            "ecosystem": "Ubuntu:14.04:LTS"
          },
          "versions": [
            "4:4.11.2-0ubuntu1",
            "4:4.11.80-0ubuntu1",
            "4:4.11.95-0ubuntu1",
            "4:4.11.97-0ubuntu1",
            "4:4.12.0-0ubuntu1",
            "4:4.12.1-0ubuntu1",
            "4:4.12.2-0ubuntu1",
            "4:4.12.3-0ubuntu1",
            "4:4.12.90-0ubuntu1",
            "4:4.12.95-0ubuntu1",
            "4:4.12.97-0ubuntu1",
            "4:4.13.0-0ubuntu1",
            "4:4.13.0-0ubuntu1.1",
            "4:4.13.3-0ubuntu1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2014/UBUNTU-CVE-2014-6053.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "krfb",
                "binary_version": "4:4.13.3-0ubuntu1.1"
              }
            ],
            "availability": "No subscription required"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.9.9+dfsg-1ubuntu1.1"
                }
              ]
            }
          ],
          "package": {
            "name": "libvncserver",
            "purl": "pkg:deb/ubuntu/libvncserver?arch=source&distro=trusty",
            "ecosystem": "Ubuntu:14.04:LTS"
          },
          "versions": [
            "0.9.9+dfsg-1",
            "0.9.9+dfsg-1ubuntu1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2014/UBUNTU-CVE-2014-6053.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libvncserver-config",
                "binary_version": "0.9.9+dfsg-1ubuntu1.1"
              },
              {
                "binary_name": "libvncserver0",
                "binary_version": "0.9.9+dfsg-1ubuntu1.1"
              },
              {
                "binary_name": "linuxvnc",
                "binary_version": "0.9.9+dfsg-1ubuntu1.1"
              }
            ],
            "availability": "No subscription required"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.3.9-6.5+deb8u1build0.14.04.1~esm1"
                }
              ]
            }
          ],
          "package": {
            "name": "tightvnc",
            "purl": "pkg:deb/ubuntu/tightvnc?arch=source&distro=trusty%2Fesm",
            "ecosystem": "Ubuntu:Pro:14.04:LTS"
          },
          "versions": [
            "1.3.9-6.4",
            "1.3.9-6.4ubuntu1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2014/UBUNTU-CVE-2014-6053.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "tightvncserver",
                "binary_version": "1.3.9-6.5+deb8u1build0.14.04.1~esm1"
              },
              {
                "binary_name": "xtightvncviewer",
                "binary_version": "1.3.9-6.5+deb8u1build0.14.04.1~esm1"
              }
            ],
            "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:2.0.2+dfsg1-4ubuntu0.1"
                }
              ]
            }
          ],
          "package": {
            "name": "italc",
            "purl": "pkg:deb/ubuntu/italc?arch=source&distro=xenial",
            "ecosystem": "Ubuntu:16.04:LTS"
          },
          "versions": [
            "1:2.0.2+dfsg1-3",
            "1:2.0.2+dfsg1-4"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2014/UBUNTU-CVE-2014-6053.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "italc-client",
                "binary_version": "1:2.0.2+dfsg1-4ubuntu0.1"
              },
              {
                "binary_name": "italc-management-console",
                "binary_version": "1:2.0.2+dfsg1-4ubuntu0.1"
              },
              {
                "binary_name": "italc-master",
                "binary_version": "1:2.0.2+dfsg1-4ubuntu0.1"
              },
              {
                "binary_name": "libitalccore",
                "binary_version": "1:2.0.2+dfsg1-4ubuntu0.1"
              }
            ],
            "availability": "No subscription required"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.8.1-0ubuntu9.3"
                }
              ]
            }
          ],
          "package": {
            "name": "vino",
            "purl": "pkg:deb/ubuntu/vino?arch=source&distro=xenial",
            "ecosystem": "Ubuntu:16.04:LTS"
          },
          "versions": [
            "3.8.1-0ubuntu6",
            "3.8.1-0ubuntu7",
            "3.8.1-0ubuntu8",
            "3.8.1-0ubuntu9",
            "3.8.1-0ubuntu9.1",
            "3.8.1-0ubuntu9.2"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2014/UBUNTU-CVE-2014-6053.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "vino",
                "binary_version": "3.8.1-0ubuntu9.3"
              }
            ],
            "availability": "No subscription required"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "tightvnc",
            "purl": "pkg:deb/ubuntu/tightvnc?arch=source&distro=xenial",
            "ecosystem": "Ubuntu:16.04:LTS"
          },
          "versions": [
            "1.3.10-0ubuntu2",
            "1.3.10-0ubuntu3"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2014/UBUNTU-CVE-2014-6053.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "tightvncserver",
                "binary_version": "1.3.10-0ubuntu3"
              },
              {
                "binary_name": "xtightvncviewer",
                "binary_version": "1.3.10-0ubuntu3"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.22.0-3ubuntu1.1"
                }
              ]
            }
          ],
          "package": {
            "name": "vino",
            "purl": "pkg:deb/ubuntu/vino?arch=source&distro=bionic",
            "ecosystem": "Ubuntu:18.04:LTS"
          },
          "versions": [
            "3.8.1-0ubuntu12",
            "3.22.0-2ubuntu1",
            "3.22.0-3ubuntu1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2014/UBUNTU-CVE-2014-6053.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "vino",
                "binary_version": "3.22.0-3ubuntu1.1"
              }
            ],
            "availability": "No subscription required"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "tightvnc",
            "purl": "pkg:deb/ubuntu/tightvnc?arch=source&distro=bionic",
            "ecosystem": "Ubuntu:18.04:LTS"
          },
          "versions": [
            "1.3.10-0ubuntu3",
            "1.3.10-0ubuntu4"
          ],
          "database_specific": {
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      ],
      "modified": "2026-10-17T12:52:41.188565136Z",
      "provider": "osv",
      "upstream": [
        "CVE-2014-6053"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2014-6053",
        "https://ubuntu.com/security/notices/USN-2365-1",
        "https://ubuntu.com/security/notices/USN-4573-1",
        "https://ubuntu.com/security/notices/USN-4587-1",
        "https://www.cve.org/CVERecord?id=CVE-2014-6053"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2014-6053",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 353268,
  "published_at": "2014-09-24T00:00:00+00:00"
}