usn-5380-1
Vulnerability from osv_ubuntu
Published
2022-04-20 07:41
Modified
2026-06-29 10:52
Summary
bash vulnerability
Details

It was discovered that Bash did not properly drop privileges when the binary had the setuid bit enabled. An attacker could possibly use this issue to escalate privileges.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2019-18276",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "bash",
            "binary_version": "4.3-7ubuntu1.8+esm2"
          },
          {
            "binary_name": "bash-builtins",
            "binary_version": "4.3-7ubuntu1.8+esm2"
          },
          {
            "binary_name": "bash-static",
            "binary_version": "4.3-7ubuntu1.8+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "bash",
        "purl": "pkg:deb/ubuntu/bash@4.3-7ubuntu1.8+esm2?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.3-7ubuntu1.8+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.2-5ubuntu3",
        "4.3-1ubuntu2",
        "4.3-2ubuntu1",
        "4.3-3ubuntu1",
        "4.3-4ubuntu1",
        "4.3-4ubuntu2",
        "4.3-6ubuntu1",
        "4.3-7ubuntu1",
        "4.3-7ubuntu1.1",
        "4.3-7ubuntu1.2",
        "4.3-7ubuntu1.3",
        "4.3-7ubuntu1.4",
        "4.3-7ubuntu1.5",
        "4.3-7ubuntu1.6",
        "4.3-7ubuntu1.7",
        "4.3-7ubuntu1.8",
        "4.3-7ubuntu1.8+esm1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2019-18276",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "bash",
            "binary_version": "4.3-14ubuntu1.4+esm1"
          },
          {
            "binary_name": "bash-builtins",
            "binary_version": "4.3-14ubuntu1.4+esm1"
          },
          {
            "binary_name": "bash-static",
            "binary_version": "4.3-14ubuntu1.4+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "bash",
        "purl": "pkg:deb/ubuntu/bash@4.3-14ubuntu1.4+esm1?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.3-14ubuntu1.4+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.3-14ubuntu1",
        "4.3-14ubuntu1.1",
        "4.3-14ubuntu1.2",
        "4.3-14ubuntu1.3",
        "4.3-14ubuntu1.4"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2019-18276",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "bash",
            "binary_version": "4.4.18-2ubuntu1.3"
          },
          {
            "binary_name": "bash-builtins",
            "binary_version": "4.4.18-2ubuntu1.3"
          },
          {
            "binary_name": "bash-static",
            "binary_version": "4.4.18-2ubuntu1.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "bash",
        "purl": "pkg:deb/ubuntu/bash@4.4.18-2ubuntu1.3?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.4.18-2ubuntu1.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.4-5ubuntu1",
        "4.4.18-1ubuntu1",
        "4.4.18-2ubuntu1",
        "4.4.18-2ubuntu1.1",
        "4.4.18-2ubuntu1.2"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2019-18276",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "bash",
            "binary_version": "5.0-6ubuntu1.2"
          },
          {
            "binary_name": "bash-builtins",
            "binary_version": "5.0-6ubuntu1.2"
          },
          {
            "binary_name": "bash-static",
            "binary_version": "5.0-6ubuntu1.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "bash",
        "purl": "pkg:deb/ubuntu/bash@5.0-6ubuntu1.2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.0-6ubuntu1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.0-4ubuntu1",
        "5.0-5ubuntu1",
        "5.0-6ubuntu1",
        "5.0-6ubuntu1.1"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that Bash did not properly drop privileges\nwhen the binary had the setuid bit enabled. An attacker could\npossibly use this issue to escalate privileges.\n",
  "id": "USN-5380-1",
  "modified": "2026-06-29T10:52:54Z",
  "published": "2022-04-20T07:41:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5380-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-18276"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "bash vulnerability",
  "upstream": [
    "UBUNTU-CVE-2019-18276"
  ]
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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