usn-5189-1
Vulnerability from osv_ubuntu
Published
2021-12-13 19:48
Modified
2026-06-29 10:52
Summary
A security issue was fixed in GLib
Details

It was discovered that GLib incorrectly handled certain environment variables. An attacker could possibly use this issue to escalate privileges.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-3800",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "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": "libglib2.0-0",
            "binary_version": "2.40.2-0ubuntu1.1+esm4"
          },
          {
            "binary_name": "libglib2.0-0-refdbg",
            "binary_version": "2.40.2-0ubuntu1.1+esm4"
          },
          {
            "binary_name": "libglib2.0-bin",
            "binary_version": "2.40.2-0ubuntu1.1+esm4"
          },
          {
            "binary_name": "libglib2.0-data",
            "binary_version": "2.40.2-0ubuntu1.1+esm4"
          },
          {
            "binary_name": "libglib2.0-tests",
            "binary_version": "2.40.2-0ubuntu1.1+esm4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "glib2.0",
        "purl": "pkg:deb/ubuntu/glib2.0@2.40.2-0ubuntu1.1+esm4?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.40.2-0ubuntu1.1+esm4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.38.0-1ubuntu1",
        "2.38.1-1",
        "2.39.1-0ubuntu1",
        "2.39.1-0ubuntu2",
        "2.39.1-0ubuntu3",
        "2.39.2-0ubuntu1",
        "2.39.2-0ubuntu2",
        "2.39.3-0ubuntu4",
        "2.39.4-0ubuntu1",
        "2.39.90-0ubuntu1",
        "2.39.91-0ubuntu2",
        "2.39.91-0ubuntu3",
        "2.39.92-2",
        "2.40.0-1",
        "2.40.0-1ubuntu1",
        "2.40.0-2",
        "2.40.2-0ubuntu1",
        "2.40.2-0ubuntu1.1",
        "2.40.2-0ubuntu1.1+esm1",
        "2.40.2-0ubuntu1.1+esm2",
        "2.40.2-0ubuntu1.1+esm3"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-3800",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libglib2.0-0",
            "binary_version": "2.48.2-0ubuntu4.8+esm1"
          },
          {
            "binary_name": "libglib2.0-0-refdbg",
            "binary_version": "2.48.2-0ubuntu4.8+esm1"
          },
          {
            "binary_name": "libglib2.0-bin",
            "binary_version": "2.48.2-0ubuntu4.8+esm1"
          },
          {
            "binary_name": "libglib2.0-data",
            "binary_version": "2.48.2-0ubuntu4.8+esm1"
          },
          {
            "binary_name": "libglib2.0-tests",
            "binary_version": "2.48.2-0ubuntu4.8+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "glib2.0",
        "purl": "pkg:deb/ubuntu/glib2.0@2.48.2-0ubuntu4.8+esm1?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.48.2-0ubuntu4.8+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.46.1-1",
        "2.46.1-2",
        "2.47.1-1",
        "2.47.3-3",
        "2.47.4-1",
        "2.47.5-1",
        "2.47.6-1",
        "2.48.0-1ubuntu3",
        "2.48.0-1ubuntu4",
        "2.48.1-1~ubuntu16.04.1",
        "2.48.2-0ubuntu1",
        "2.48.2-0ubuntu3",
        "2.48.2-0ubuntu4",
        "2.48.2-0ubuntu4.1",
        "2.48.2-0ubuntu4.2",
        "2.48.2-0ubuntu4.3",
        "2.48.2-0ubuntu4.4",
        "2.48.2-0ubuntu4.5",
        "2.48.2-0ubuntu4.6",
        "2.48.2-0ubuntu4.7",
        "2.48.2-0ubuntu4.8"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-3800",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libglib2.0-0",
            "binary_version": "2.56.4-0ubuntu0.18.04.9"
          },
          {
            "binary_name": "libglib2.0-bin",
            "binary_version": "2.56.4-0ubuntu0.18.04.9"
          },
          {
            "binary_name": "libglib2.0-data",
            "binary_version": "2.56.4-0ubuntu0.18.04.9"
          },
          {
            "binary_name": "libglib2.0-dev-bin",
            "binary_version": "2.56.4-0ubuntu0.18.04.9"
          },
          {
            "binary_name": "libglib2.0-tests",
            "binary_version": "2.56.4-0ubuntu0.18.04.9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "glib2.0",
        "purl": "pkg:deb/ubuntu/glib2.0@2.56.4-0ubuntu0.18.04.9?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.56.4-0ubuntu0.18.04.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.54.1-1ubuntu1",
        "2.55.2-2ubuntu1",
        "2.56.0-2ubuntu1",
        "2.56.0-4ubuntu1",
        "2.56.1-2ubuntu1",
        "2.56.2-0ubuntu0.18.04.1",
        "2.56.2-0ubuntu0.18.04.2",
        "2.56.3-0ubuntu0.18.04.1",
        "2.56.4-0ubuntu0.18.04.2",
        "2.56.4-0ubuntu0.18.04.3",
        "2.56.4-0ubuntu0.18.04.4",
        "2.56.4-0ubuntu0.18.04.5",
        "2.56.4-0ubuntu0.18.04.6",
        "2.56.4-0ubuntu0.18.04.7",
        "2.56.4-0ubuntu0.18.04.8"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that GLib incorrectly handled certain environment variables.\nAn attacker could possibly use this issue to escalate privileges.\n",
  "id": "USN-5189-1",
  "modified": "2026-06-29T10:52:52Z",
  "published": "2021-12-13T19:48:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5189-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3800"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "A security issue was fixed in GLib",
  "upstream": [
    "UBUNTU-CVE-2021-3800"
  ]
}



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Nomenclature

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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