ubuntu-cve-2023-30571
Vulnerability from osv_ubuntu
Published
2023-05-29 20:15
Modified
2026-07-21 20:46
Summary
Details

Libarchive through 3.6.2 can cause directories to have world-writable permissions. The umask() call inside archive_write_disk_posix.c changes the umask of the whole process for a very short period of time; a race condition with another thread can lead to a permanent umask 0 setting. Such a race condition could lead to implicit directory creation with permissions 0777 (without the sticky bit), which means that any low-privileged local user can delete and rename files inside those directories.


{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "bsdcpio",
            "binary_version": "3.1.2-7ubuntu2.8+esm5"
          },
          {
            "binary_name": "bsdtar",
            "binary_version": "3.1.2-7ubuntu2.8+esm5"
          },
          {
            "binary_name": "libarchive13",
            "binary_version": "3.1.2-7ubuntu2.8+esm5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "libarchive",
        "purl": "pkg:deb/ubuntu/libarchive@3.1.2-7ubuntu2.8+esm5?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.1.2-5ubuntu1",
        "3.1.2-7ubuntu1",
        "3.1.2-7ubuntu2",
        "3.1.2-7ubuntu2.1",
        "3.1.2-7ubuntu2.2",
        "3.1.2-7ubuntu2.3",
        "3.1.2-7ubuntu2.4",
        "3.1.2-7ubuntu2.6",
        "3.1.2-7ubuntu2.7",
        "3.1.2-7ubuntu2.8",
        "3.1.2-7ubuntu2.8+esm1",
        "3.1.2-7ubuntu2.8+esm3",
        "3.1.2-7ubuntu2.8+esm4",
        "3.1.2-7ubuntu2.8+esm5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "bsdcpio",
            "binary_version": "3.1.2-11ubuntu0.16.04.8+esm3"
          },
          {
            "binary_name": "bsdtar",
            "binary_version": "3.1.2-11ubuntu0.16.04.8+esm3"
          },
          {
            "binary_name": "libarchive13",
            "binary_version": "3.1.2-11ubuntu0.16.04.8+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libarchive",
        "purl": "pkg:deb/ubuntu/libarchive@3.1.2-11ubuntu0.16.04.8+esm3?arch=source\u0026distro=esm-infra-legacy/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.1.2-11build1",
        "3.1.2-11ubuntu0.16.04.1",
        "3.1.2-11ubuntu0.16.04.2",
        "3.1.2-11ubuntu0.16.04.3",
        "3.1.2-11ubuntu0.16.04.4",
        "3.1.2-11ubuntu0.16.04.5",
        "3.1.2-11ubuntu0.16.04.6",
        "3.1.2-11ubuntu0.16.04.7",
        "3.1.2-11ubuntu0.16.04.8",
        "3.1.2-11ubuntu0.16.04.8+esm1",
        "3.1.2-11ubuntu0.16.04.8+esm2",
        "3.1.2-11ubuntu0.16.04.8+esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "bsdcpio",
            "binary_version": "3.2.2-3.1ubuntu0.7+esm3"
          },
          {
            "binary_name": "bsdtar",
            "binary_version": "3.2.2-3.1ubuntu0.7+esm3"
          },
          {
            "binary_name": "libarchive-tools",
            "binary_version": "3.2.2-3.1ubuntu0.7+esm3"
          },
          {
            "binary_name": "libarchive13",
            "binary_version": "3.2.2-3.1ubuntu0.7+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libarchive",
        "purl": "pkg:deb/ubuntu/libarchive@3.2.2-3.1ubuntu0.7+esm3?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.2.2-3.1",
        "3.2.2-3.1ubuntu0.1",
        "3.2.2-3.1ubuntu0.2",
        "3.2.2-3.1ubuntu0.3",
        "3.2.2-3.1ubuntu0.4",
        "3.2.2-3.1ubuntu0.5",
        "3.2.2-3.1ubuntu0.6",
        "3.2.2-3.1ubuntu0.7",
        "3.2.2-3.1ubuntu0.7+esm1",
        "3.2.2-3.1ubuntu0.7+esm2",
        "3.2.2-3.1ubuntu0.7+esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libarchive-tools",
            "binary_version": "3.4.0-2ubuntu1.5+esm3"
          },
          {
            "binary_name": "libarchive13",
            "binary_version": "3.4.0-2ubuntu1.5+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "libarchive",
        "purl": "pkg:deb/ubuntu/libarchive@3.4.0-2ubuntu1.5+esm3?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.4.0-1",
        "3.4.0-1build1",
        "3.4.0-1ubuntu2",
        "3.4.0-2ubuntu1",
        "3.4.0-2ubuntu1.1",
        "3.4.0-2ubuntu1.2",
        "3.4.0-2ubuntu1.3",
        "3.4.0-2ubuntu1.4",
        "3.4.0-2ubuntu1.5",
        "3.4.0-2ubuntu1.5+esm1",
        "3.4.0-2ubuntu1.5+esm2",
        "3.4.0-2ubuntu1.5+esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libarchive-tools",
            "binary_version": "3.6.0-1ubuntu1.8"
          },
          {
            "binary_name": "libarchive13",
            "binary_version": "3.6.0-1ubuntu1.8"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libarchive",
        "purl": "pkg:deb/ubuntu/libarchive@3.6.0-1ubuntu1.8?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.4.3-2",
        "3.4.3-2build1",
        "3.5.2-1",
        "3.5.2-1ubuntu1",
        "3.6.0-1ubuntu1",
        "3.6.0-1ubuntu1.1",
        "3.6.0-1ubuntu1.2",
        "3.6.0-1ubuntu1.3",
        "3.6.0-1ubuntu1.4",
        "3.6.0-1ubuntu1.5",
        "3.6.0-1ubuntu1.6",
        "3.6.0-1ubuntu1.7",
        "3.6.0-1ubuntu1.8"
      ]
    }
  ],
  "aliases": [],
  "details": "Libarchive through 3.6.2 can cause directories to have world-writable permissions. The umask() call inside archive_write_disk_posix.c changes the umask of the whole process for a very short period of time; a race condition with another thread can lead to a permanent umask 0 setting. Such a race condition could lead to implicit directory creation with permissions 0777 (without the sticky bit), which means that any low-privileged local user can delete and rename files inside those directories.",
  "id": "UBUNTU-CVE-2023-30571",
  "modified": "2026-07-21T20:46:44Z",
  "published": "2023-05-29T20:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-30571"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-30571"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "negligible",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2023-30571"
  ]
}



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