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libx11 — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2020-14344

An integer overflow leading to a heap-buffer overflow was found in The X Input Method (XIM) client was implemented in libX11 before version 1.6.10. As per upstream this is security relevant when setuid programs call XIM client functions while running with elevated privileges. No such programs are shipped with Red Hat Enterprise Linux.

Products
libx11
Affected versions
Not specified
Fixed versions
2:1.6.10-1
CVEs
CVE-2020-14344
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 13:25 UTC · Revision 1

Source evidence

DEBIAN-CVE-2020-14344

core-osv · Original source

Published 5 Aug 2020, 14:15 UTC

An integer overflow leading to a heap-buffer overflow was found in The X Input Method (XIM) client was implemented in libX11 before version 1.6.10. As per upstream this is security relevant when setuid programs call XIM client functions while running with elevated privileges. No such programs are shipped with Red Hat Enterprise Linux.

osv:DEBIAN-CVE-2020-14344

libx11

Fixed versions: 2:1.6.10-1

libx11

Fixed versions: 2:1.6.10-1

libx11

Fixed versions: 2:1.6.10-1

Complete source record
{
  "id": "cc502f05ec74b908b88bb15a40e23e661d6231e37413472b3bce9e2c6f4fb6a5",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-14344",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2020-14344",
    "summary": "An integer overflow leading to a heap-buffer overflow was found in The X Input Method (XIM) client was implemented in libX11 before version 1.6.10. As per upstream this is security relevant when setuid programs call XIM client functions while running with elevated privileges. No such programs are shipped with Red Hat Enterprise Linux.",
    "evidence": "osv:DEBIAN-CVE-2020-14344",
    "products": [
      {
        "name": {
          "value": "libx11",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2:1.6.10-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libx11",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2:1.6.10-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libx11",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2:1.6.10-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2020-14344",
      "aliases": [
        "DEBIAN-CVE-2020-14344"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2:1.6.10-1"
                }
              ]
            }
          ],
          "package": {
            "name": "libx11",
            "purl": "pkg:deb/debian/libx11?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-14344.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2:1.6.10-1"
                }
              ]
            }
          ],
          "package": {
            "name": "libx11",
            "purl": "pkg:deb/debian/libx11?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-14344.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2:1.6.10-1"
                }
              ]
            }
          ],
          "package": {
            "name": "libx11",
            "purl": "pkg:deb/debian/libx11?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-14344.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-26T12:02:26.442043080Z",
      "provider": "osv",
      "upstream": [
        "CVE-2020-14344"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2020-14344"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2020-14344",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 452193,
  "published_at": "2020-08-05T14:15:12.42+00:00"
}