ubuntu-cve-2022-28321
Vulnerability from osv_ubuntu
Published
2022-09-19 22:15
Modified
2026-04-22 07:41
Summary
Details

The Linux-PAM package before 1.5.2-6.1 for openSUSE Tumbleweed allows authentication bypass for SSH logins. The pam_access.so module doesn't correctly restrict login if a user tries to connect from an IP address that is not resolvable via DNS. In such conditions, a user with denied access to a machine can still get access. NOTE: the relevance of this issue is largely limited to openSUSE Tumbleweed and openSUSE Factory; it does not affect Linux-PAM upstream.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
negligible
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libpam-cracklib",
            "binary_version": "1.1.8-1ubuntu2.2+esm1"
          },
          {
            "binary_name": "libpam-modules",
            "binary_version": "1.1.8-1ubuntu2.2+esm1"
          },
          {
            "binary_name": "libpam-modules-bin",
            "binary_version": "1.1.8-1ubuntu2.2+esm1"
          },
          {
            "binary_name": "libpam-runtime",
            "binary_version": "1.1.8-1ubuntu2.2+esm1"
          },
          {
            "binary_name": "libpam0g",
            "binary_version": "1.1.8-1ubuntu2.2+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "pam",
        "purl": "pkg:deb/ubuntu/pam@1.1.8-1ubuntu2.2+esm1?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.8-1ubuntu2.2+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.3-8ubuntu3",
        "1.1.3-10ubuntu1",
        "1.1.3-11ubuntu1",
        "1.1.8-1ubuntu1",
        "1.1.8-1ubuntu2",
        "1.1.8-1ubuntu2.1",
        "1.1.8-1ubuntu2.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libpam-cracklib",
            "binary_version": "1.1.8-3.2ubuntu2.3+esm2"
          },
          {
            "binary_name": "libpam-modules",
            "binary_version": "1.1.8-3.2ubuntu2.3+esm2"
          },
          {
            "binary_name": "libpam-modules-bin",
            "binary_version": "1.1.8-3.2ubuntu2.3+esm2"
          },
          {
            "binary_name": "libpam-runtime",
            "binary_version": "1.1.8-3.2ubuntu2.3+esm2"
          },
          {
            "binary_name": "libpam0g",
            "binary_version": "1.1.8-3.2ubuntu2.3+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "pam",
        "purl": "pkg:deb/ubuntu/pam@1.1.8-3.2ubuntu2.3+esm2?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.8-3.2ubuntu2.3+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.8-3.1ubuntu3",
        "1.1.8-3.2ubuntu2",
        "1.1.8-3.2ubuntu2.1",
        "1.1.8-3.2ubuntu2.3",
        "1.1.8-3.2ubuntu2.3+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libpam-cracklib",
            "binary_version": "1.1.8-3.6ubuntu2.18.04.4"
          },
          {
            "binary_name": "libpam-modules",
            "binary_version": "1.1.8-3.6ubuntu2.18.04.4"
          },
          {
            "binary_name": "libpam-modules-bin",
            "binary_version": "1.1.8-3.6ubuntu2.18.04.4"
          },
          {
            "binary_name": "libpam-runtime",
            "binary_version": "1.1.8-3.6ubuntu2.18.04.4"
          },
          {
            "binary_name": "libpam0g",
            "binary_version": "1.1.8-3.6ubuntu2.18.04.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "pam",
        "purl": "pkg:deb/ubuntu/pam@1.1.8-3.6ubuntu2.18.04.4?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.8-3.6ubuntu2.18.04.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.8-3.2ubuntu3",
        "1.1.8-3.2ubuntu4",
        "1.1.8-3.6ubuntu1",
        "1.1.8-3.6ubuntu2",
        "1.1.8-3.6ubuntu2.18.04.1",
        "1.1.8-3.6ubuntu2.18.04.2",
        "1.1.8-3.6ubuntu2.18.04.3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libpam-cracklib",
            "binary_version": "1.3.1-5ubuntu4.4"
          },
          {
            "binary_name": "libpam-modules",
            "binary_version": "1.3.1-5ubuntu4.4"
          },
          {
            "binary_name": "libpam-modules-bin",
            "binary_version": "1.3.1-5ubuntu4.4"
          },
          {
            "binary_name": "libpam-runtime",
            "binary_version": "1.3.1-5ubuntu4.4"
          },
          {
            "binary_name": "libpam0g",
            "binary_version": "1.3.1-5ubuntu4.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "pam",
        "purl": "pkg:deb/ubuntu/pam@1.3.1-5ubuntu4.4?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.3.1-5ubuntu4.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.1-5ubuntu1",
        "1.3.1-5ubuntu3",
        "1.3.1-5ubuntu4",
        "1.3.1-5ubuntu4.1",
        "1.3.1-5ubuntu4.2",
        "1.3.1-5ubuntu4.3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libpam-cracklib",
            "binary_version": "1.4.0-11ubuntu2.1"
          },
          {
            "binary_name": "libpam-modules",
            "binary_version": "1.4.0-11ubuntu2.1"
          },
          {
            "binary_name": "libpam-modules-bin",
            "binary_version": "1.4.0-11ubuntu2.1"
          },
          {
            "binary_name": "libpam-runtime",
            "binary_version": "1.4.0-11ubuntu2.1"
          },
          {
            "binary_name": "libpam0g",
            "binary_version": "1.4.0-11ubuntu2.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "pam",
        "purl": "pkg:deb/ubuntu/pam@1.4.0-11ubuntu2.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.0-11ubuntu2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.1-5ubuntu11",
        "1.4.0-10ubuntu1",
        "1.4.0-10ubuntu2",
        "1.4.0-11ubuntu1",
        "1.4.0-11ubuntu2"
      ]
    }
  ],
  "aliases": [],
  "details": "The Linux-PAM package before 1.5.2-6.1 for openSUSE Tumbleweed allows authentication bypass for SSH logins. The pam_access.so module doesn\u0027t correctly restrict login if a user tries to connect from an IP address that is not resolvable via DNS. In such conditions, a user with denied access to a machine can still get access. NOTE: the relevance of this issue is largely limited to openSUSE Tumbleweed and openSUSE Factory; it does not affect Linux-PAM upstream.",
  "id": "UBUNTU-CVE-2022-28321",
  "modified": "2026-04-22T07:41:33Z",
  "published": "2022-09-19T22:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-28321"
    },
    {
      "type": "REPORT",
      "url": "https://www.suse.com/security/cve/CVE-2022-28321.html"
    },
    {
      "type": "REPORT",
      "url": "http://download.opensuse.org/source/distribution/openSUSE-current/repo/oss/src/"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/linux-pam/linux-pam/pull/447"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5825-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5825-2"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2022-28321"
    }
  ],
  "related": [
    "USN-5825-1",
    "USN-5825-2"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "negligible",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2022-28321"
  ]
}



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