usn-6425-1
Vulnerability from osv_ubuntu
Published
2023-10-10 15:01
Modified
2026-04-27 14:11
Summary
samba vulnerabilities
Details

Sri Nagasubramanian discovered that the Samba acl_xattr VFS module incorrectly handled read-only files. When Samba is configured to ignore system ACLs, a remote attacker could possibly use this issue to truncate read-only files. (CVE-2023-4091)

Andrew Bartlett discovered that Samba incorrectly handled the DirSync control. A remote attacker with an RODC DC account could possibly use this issue to obtain all domain secrets. (CVE-2023-4154)

Andrew Bartlett discovered that Samba incorrectly handled the rpcecho development server. A remote attacker could possibly use this issue to cause Samba to stop responding, resulting in a denial of service. (CVE-2023-42669)

Kirin van der Veer discovered that Samba incorrectly handled certain RPC service listeners. A remote attacker could possibly use this issue to cause Samba to start multiple incompatible RPC listeners, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS, and Ubuntu 23.04. (CVE-2023-42670)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-4091",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-4154",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-42669",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ctdb",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.6"
          },
          {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.6"
          },
          {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.6"
          },
          {
            "binary_name": "libsmbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.6"
          },
          {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.6"
          },
          {
            "binary_name": "python3-samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.6"
          },
          {
            "binary_name": "registry-tools",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.6"
          },
          {
            "binary_name": "samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.6"
          },
          {
            "binary_name": "samba-common",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.6"
          },
          {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.6"
          },
          {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.6"
          },
          {
            "binary_name": "samba-libs",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.6"
          },
          {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.6"
          },
          {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.6"
          },
          {
            "binary_name": "smbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.6"
          },
          {
            "binary_name": "winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "samba",
        "purl": "pkg:deb/ubuntu/samba@2:4.15.13+dfsg-0ubuntu0.20.04.6?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:4.15.13+dfsg-0ubuntu0.20.04.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:4.10.7+dfsg-0ubuntu2",
        "2:4.10.7+dfsg-0ubuntu3",
        "2:4.11.1+dfsg-3ubuntu1",
        "2:4.11.1+dfsg-3ubuntu2",
        "2:4.11.1+dfsg-3ubuntu4",
        "2:4.11.5+dfsg-1ubuntu1",
        "2:4.11.5+dfsg-1ubuntu2",
        "2:4.11.6+dfsg-0ubuntu1",
        "2:4.11.6+dfsg-0ubuntu1.1",
        "2:4.11.6+dfsg-0ubuntu1.2",
        "2:4.11.6+dfsg-0ubuntu1.3",
        "2:4.11.6+dfsg-0ubuntu1.4",
        "2:4.11.6+dfsg-0ubuntu1.5",
        "2:4.11.6+dfsg-0ubuntu1.6",
        "2:4.11.6+dfsg-0ubuntu1.8",
        "2:4.11.6+dfsg-0ubuntu1.9",
        "2:4.11.6+dfsg-0ubuntu1.10",
        "2:4.13.14+dfsg-0ubuntu0.20.04.1",
        "2:4.13.14+dfsg-0ubuntu0.20.04.2",
        "2:4.13.14+dfsg-0ubuntu0.20.04.3",
        "2:4.13.14+dfsg-0ubuntu0.20.04.4",
        "2:4.13.17~dfsg-0ubuntu0.21.04.1",
        "2:4.13.17~dfsg-0ubuntu0.21.04.2",
        "2:4.13.17~dfsg-0ubuntu1.20.04.1",
        "2:4.13.17~dfsg-0ubuntu1.20.04.2",
        "2:4.13.17~dfsg-0ubuntu1.20.04.4",
        "2:4.13.17~dfsg-0ubuntu1.20.04.5",
        "2:4.15.13+dfsg-0ubuntu0.20.04.1",
        "2:4.15.13+dfsg-0ubuntu0.20.04.2",
        "2:4.15.13+dfsg-0ubuntu0.20.04.3",
        "2:4.15.13+dfsg-0ubuntu0.20.04.4",
        "2:4.15.13+dfsg-0ubuntu0.20.04.5"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-4091",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-4154",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-42669",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-42670",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ctdb",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.5"
          },
          {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.5"
          },
          {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.5"
          },
          {
            "binary_name": "libsmbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.5"
          },
          {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.5"
          },
          {
            "binary_name": "python3-samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.5"
          },
          {
            "binary_name": "registry-tools",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.5"
          },
          {
            "binary_name": "samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.5"
          },
          {
            "binary_name": "samba-common",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.5"
          },
          {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.5"
          },
          {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.5"
          },
          {
            "binary_name": "samba-libs",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.5"
          },
          {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.5"
          },
          {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.5"
          },
          {
            "binary_name": "smbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.5"
          },
          {
            "binary_name": "winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "samba",
        "purl": "pkg:deb/ubuntu/samba@2:4.15.13+dfsg-0ubuntu1.5?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:4.15.13+dfsg-0ubuntu1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:4.13.5+dfsg-2ubuntu2",
        "2:4.13.5+dfsg-2ubuntu3",
        "2:4.13.14+dfsg-0ubuntu1",
        "2:4.13.14+dfsg-0ubuntu2",
        "2:4.15.5~dfsg-0ubuntu1",
        "2:4.15.5~dfsg-0ubuntu2",
        "2:4.15.5~dfsg-0ubuntu4",
        "2:4.15.5~dfsg-0ubuntu5",
        "2:4.15.5~dfsg-0ubuntu5.1",
        "2:4.15.9+dfsg-0ubuntu0.2",
        "2:4.15.9+dfsg-0ubuntu0.3",
        "2:4.15.13+dfsg-0ubuntu1",
        "2:4.15.13+dfsg-0ubuntu1.1",
        "2:4.15.13+dfsg-0ubuntu1.2",
        "2:4.15.13+dfsg-0ubuntu1.3",
        "2:4.15.13+dfsg-0ubuntu1.4"
      ]
    }
  ],
  "aliases": [],
  "details": "Sri Nagasubramanian discovered that the Samba acl_xattr VFS module\nincorrectly handled read-only files. When Samba is configured to ignore\nsystem ACLs, a remote attacker could possibly use this issue to truncate\nread-only files. (CVE-2023-4091)\n\nAndrew Bartlett discovered that Samba incorrectly handled the DirSync\ncontrol. A remote attacker with an RODC DC account could possibly use this\nissue to obtain all domain secrets. (CVE-2023-4154)\n\nAndrew Bartlett discovered that Samba incorrectly handled the rpcecho\ndevelopment server. A remote attacker could possibly use this issue to\ncause Samba to stop responding, resulting in a denial of service.\n(CVE-2023-42669)\n\nKirin van der Veer discovered that Samba incorrectly handled certain RPC\nservice listeners. A remote attacker could possibly use this issue to cause\nSamba to start multiple incompatible RPC listeners, resulting in a denial\nof service. This issue only affected Ubuntu 22.04 LTS, and Ubuntu 23.04.\n(CVE-2023-42670)\n",
  "id": "USN-6425-1",
  "modified": "2026-04-27T14:11:31Z",
  "published": "2023-10-10T15:01:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6425-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-4091"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-4154"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-42669"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-42670"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "samba vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2023-4091",
    "UBUNTU-CVE-2023-4154",
    "UBUNTU-CVE-2023-42669",
    "UBUNTU-CVE-2023-42670"
  ]
}



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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.
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