{
  "cveId": "CVE-2021-3800",
  "url": "https://patchblox.com/security/cve/CVE-2021-3800",
  "summary": "CVE-2021-3800 is fixed in 12 products on 1 platform, first by libglib2.0-0 2.56.4-0ubuntu0.18.04.9, released November 1, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "glib2: GLib provides the core application building blocks for libraries and applications written in C",
  "description": "GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures.\n\nSecurity Fix(es):\n\n* glib2: Possible privilege escalation thourgh pkexec and aliases (CVE-2021-3800)\n\n* glib: g_file_replace() with G_FILE_CREATE_REPLACE_DESTINATION creates empty target for dangling symlink (CVE-2021-28153)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.",
  "published": "2021-11-01T17:59:00Z",
  "severity": "Moderate",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
  "epss": 0.00565,
  "epssPercentile": 0.4722,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "glib2",
      "release": "RHEL 8",
      "fixedVersion": "0:2.56.4-156.el8",
      "fix": "RHSA-2021:4385",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4385",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "glib2",
      "release": "ol 8",
      "fixedVersion": "0:2.56.4-156.el8",
      "fix": "ELSA-2021-4385",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-4385",
      "released": "2021-11-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "glib2-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:2.56.4-156.el8",
      "fix": "RHSA-2021:4385",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4385",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "glib2-devel",
      "release": "ol 8",
      "fixedVersion": "0:2.56.4-156.el8",
      "fix": "ELSA-2021-4385",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-4385",
      "released": "2021-11-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "glib2-doc",
      "release": "RHEL 8",
      "fixedVersion": "0:2.56.4-156.el8",
      "fix": "RHSA-2021:4385",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4385",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "glib2-doc",
      "release": "ol 8",
      "fixedVersion": "0:2.56.4-156.el8",
      "fix": "ELSA-2021-4385",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-4385",
      "released": "2021-11-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "glib2-fam",
      "release": "RHEL 8",
      "fixedVersion": "0:2.56.4-156.el8",
      "fix": "RHSA-2021:4385",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4385",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "glib2-fam",
      "release": "ol 8",
      "fixedVersion": "0:2.56.4-156.el8",
      "fix": "ELSA-2021-4385",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-4385",
      "released": "2021-11-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "glib2-static",
      "release": "RHEL 8",
      "fixedVersion": "0:2.56.4-156.el8",
      "fix": "RHSA-2021:4385",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4385",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "glib2-static",
      "release": "ol 8",
      "fixedVersion": "0:2.56.4-156.el8",
      "fix": "ELSA-2021-4385",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-4385",
      "released": "2021-11-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "glib2-tests",
      "release": "RHEL 8",
      "fixedVersion": "0:2.56.4-156.el8",
      "fix": "RHSA-2021:4385",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4385",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "glib2-tests",
      "release": "ol 8",
      "fixedVersion": "0:2.56.4-156.el8",
      "fix": "ELSA-2021-4385",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-4385",
      "released": "2021-11-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "glib2.0",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "2.64.0-1",
      "fix": "DEBIAN-CVE-2021-3800",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-3800",
      "released": "2022-08-23T16:15:09Z"
    },
    {
      "platform": "linux",
      "product": "glib2.0",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "2.64.0-1",
      "fix": "DEBIAN-CVE-2021-3800",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-3800",
      "released": "2022-08-23T16:15:09Z"
    },
    {
      "platform": "linux",
      "product": "glib2.0",
      "release": "Debian 14",
      "fixedVersion": "2.64.0-1",
      "fix": "DEBIAN-CVE-2021-3800",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-3800",
      "released": "2022-08-23T16:15:09Z"
    },
    {
      "platform": "linux",
      "product": "libglib2.0-0",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.56.4-0ubuntu0.18.04.9",
      "fix": "libglib2.0-0 2.56.4-0ubuntu0.18.04.9",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libglib2.0-0-2.56.4-0ubuntu0.18.04.9",
      "released": "2021-11-01T17:59:00Z"
    },
    {
      "platform": "linux",
      "product": "libglib2.0-bin",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.56.4-0ubuntu0.18.04.9",
      "fix": "libglib2.0-bin 2.56.4-0ubuntu0.18.04.9",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libglib2.0-bin-2.56.4-0ubuntu0.18.04.9",
      "released": "2021-11-01T17:59:00Z"
    },
    {
      "platform": "linux",
      "product": "libglib2.0-data",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.56.4-0ubuntu0.18.04.9",
      "fix": "libglib2.0-data 2.56.4-0ubuntu0.18.04.9",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libglib2.0-data-2.56.4-0ubuntu0.18.04.9",
      "released": "2021-11-01T17:59:00Z"
    },
    {
      "platform": "linux",
      "product": "libglib2.0-dev-bin",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.56.4-0ubuntu0.18.04.9",
      "fix": "libglib2.0-dev-bin 2.56.4-0ubuntu0.18.04.9",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libglib2.0-dev-bin-2.56.4-0ubuntu0.18.04.9",
      "released": "2021-11-01T17:59:00Z"
    },
    {
      "platform": "linux",
      "product": "libglib2.0-tests",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.56.4-0ubuntu0.18.04.9",
      "fix": "libglib2.0-tests 2.56.4-0ubuntu0.18.04.9",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libglib2.0-tests-2.56.4-0ubuntu0.18.04.9",
      "released": "2021-11-01T17:59:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}