usn-4772-1
Vulnerability from osv_ubuntu
Published
2021-03-15 20:16
Modified
2026-06-29 10:52
Summary
vnc4 vulnerabilities
Details

USN-2500-1 addressed CVE-2015-0255 for xorg-server. This update provides the corresponding fix for VNC4 on Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. (CVE-2015-0255)

USN-2726-1 addressed CVE-2015-1283 for Expat. This update provides the corresponding fix for VNC4 on Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. (CVE-2015-1283)

Original advisory details:

Olivier Fourdan discovered that the X.Org X server incorrectly handled XkbSetGeometry requests resulting in an information leak. An attacker able to connect to an X server, either locally or remotely, could use this issue to possibly obtain sensitive information. (CVE-2015-0255)

It was discovered that Expat incorrectly handled malformed XML data. If a user or application linked against Expat were tricked into opening a crafted XML file, an attacker could cause a denial of service, or possibly execute arbitrary code. (CVE-2015-1283)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2015-0255",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2015-1283",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "vnc4server",
            "binary_version": "4.1.1+xorg4.3.0-37ubuntu5.0.2+esm1"
          },
          {
            "binary_name": "xvnc4viewer",
            "binary_version": "4.1.1+xorg4.3.0-37ubuntu5.0.2+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "vnc4",
        "purl": "pkg:deb/ubuntu/vnc4@4.1.1+xorg4.3.0-37ubuntu5.0.2+esm1?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.1.1+xorg4.3.0-37ubuntu5.0.2+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.1.1+xorg4.3.0-37ubuntu5",
        "4.1.1+xorg4.3.0-37ubuntu5.0.1",
        "4.1.1+xorg4.3.0-37ubuntu5.0.2"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2015-0255",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2015-1283",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "vnc4server",
            "binary_version": "4.1.1+xorg4.3.0-37.3ubuntu2.1+esm1"
          },
          {
            "binary_name": "xvnc4viewer",
            "binary_version": "4.1.1+xorg4.3.0-37.3ubuntu2.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "vnc4",
        "purl": "pkg:deb/ubuntu/vnc4@4.1.1+xorg4.3.0-37.3ubuntu2.1+esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.1.1+xorg4.3.0-37.3ubuntu2.1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.1.1+xorg4.3.0-37.3ubuntu2"
      ]
    }
  ],
  "aliases": [],
  "details": "\nUSN-2500-1 addressed CVE-2015-0255 for xorg-server. This update provides\nthe corresponding fix for VNC4 on Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.\n(CVE-2015-0255)\n\nUSN-2726-1 addressed CVE-2015-1283 for Expat. This update provides the\ncorresponding fix for VNC4 on Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.\n(CVE-2015-1283)\n\nOriginal advisory details:\n\n Olivier Fourdan discovered that the X.Org X server incorrectly handled\n XkbSetGeometry requests resulting in an information leak. An attacker able\n to connect to an X server, either locally or remotely, could use this issue\n to possibly obtain sensitive information. (CVE-2015-0255)\n\n It was discovered that Expat incorrectly handled malformed XML data. If a\n user or application linked against Expat were tricked into opening a\n crafted XML file, an attacker could cause a denial of service, or possibly\n execute arbitrary code. (CVE-2015-1283)\n",
  "id": "USN-4772-1",
  "modified": "2026-06-29T10:52:48Z",
  "published": "2021-03-15T20:16:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4772-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2015-0255"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2015-1283"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "vnc4 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2015-0255",
    "UBUNTU-CVE-2015-1283"
  ]
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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