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glib2.0 — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2021-3800

A flaw was found in glib before version 2.63.6. Due to random charset alias, pkexec can leak content from files owned by privileged users to unprivileged ones under the right condition.

Products
glib2.0
Affected versions
Not specified
Fixed versions
2.64.0-1
CVEs
CVE-2021-3800
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 00:34 UTC · Revision 1

Source evidence

DEBIAN-CVE-2021-3800

core-osv · Original source

Published 23 Aug 2022, 16:15 UTC

A flaw was found in glib before version 2.63.6. Due to random charset alias, pkexec can leak content from files owned by privileged users to unprivileged ones under the right condition.

osv:DEBIAN-CVE-2021-3800

glib2.0

Fixed versions: 2.64.0-1

glib2.0

Fixed versions: 2.64.0-1

glib2.0

Fixed versions: 2.64.0-1

Complete source record
{
  "id": "e9cb2d594e62c8cbec95de38c91eb0ba5a1b114416619bc5ce5e5400a98727d8",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2021-3800",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2021-3800",
    "summary": "A flaw was found in glib before version 2.63.6. Due to random charset alias, pkexec can leak content from files owned by privileged users to unprivileged ones under the right condition.",
    "evidence": "osv:DEBIAN-CVE-2021-3800",
    "products": [
      {
        "name": {
          "value": "glib2.0",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.64.0-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "glib2.0",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.64.0-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "glib2.0",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.64.0-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2021-3800",
      "aliases": [
        "DEBIAN-CVE-2021-3800"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.64.0-1"
                }
              ]
            }
          ],
          "package": {
            "name": "glib2.0",
            "purl": "pkg:deb/debian/glib2.0?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-3800.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.64.0-1"
                }
              ]
            }
          ],
          "package": {
            "name": "glib2.0",
            "purl": "pkg:deb/debian/glib2.0?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-3800.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.64.0-1"
                }
              ]
            }
          ],
          "package": {
            "name": "glib2.0",
            "purl": "pkg:deb/debian/glib2.0?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-3800.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-23T18:03:27.108304624Z",
      "provider": "osv",
      "upstream": [
        "CVE-2021-3800"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2021-3800"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2021-3800",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 421555,
  "published_at": "2022-08-23T16:15:09.98+00:00"
}