{
  "cveId": "CVE-2021-23177",
  "url": "https://patchblox.com/security/cve/CVE-2021-23177",
  "summary": "CVE-2021-23177 is fixed in 5 products on 1 platform, first by libarchive-tools 3.4.0-2ubuntu1.1, released December 23, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "libarchive-devel: The libarchive programming library can create and read several different streaming archive formats, including GNU tar...",
  "description": "The libarchive programming library can create and read several different streaming archive formats, including GNU tar, cpio, and ISO 9660 CD-ROM images. Libarchive is used notably in the bsdtar utility, scripting language bindings such as python-libarchive, and several popular desktop file managers.\n\nSecurity Fix(es):\n\n* libarchive: extracting a symlink with ACLs modifies ACLs of target (CVE-2021-23177)\n\n* libarchive: symbolic links incorrectly followed when changing modes, times, ACL and flags of a file while extracting an archive (CVE-2021-31566)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "published": "2021-12-23T16:00:00Z",
  "severity": "Moderate",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
  "epss": 0.00392,
  "epssPercentile": 0.33535,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "bsdtar",
      "release": "RHEL 8",
      "fixedVersion": "0:3.3.3-3.el8_5",
      "fix": "RHSA-2022:0892",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0892",
      "released": "2022-03-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bsdtar",
      "release": "almalinux 8",
      "fixedVersion": "3.3.3-3.el8_5",
      "fix": "ALSA-2022:0892",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0892",
      "released": "2022-03-15T09:11:33Z"
    },
    {
      "platform": "linux",
      "product": "bsdtar",
      "release": "ol 8",
      "fixedVersion": "0:3.3.3-3.el8_5",
      "fix": "ELSA-2022-0892",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0892",
      "released": "2022-03-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libarchive",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "3.5.2-1",
      "fix": "DEBIAN-CVE-2021-23177",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-23177",
      "released": "2022-08-23T16:15:09Z"
    },
    {
      "platform": "linux",
      "product": "libarchive",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "3.5.2-1",
      "fix": "DEBIAN-CVE-2021-23177",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-23177",
      "released": "2022-08-23T16:15:09Z"
    },
    {
      "platform": "linux",
      "product": "libarchive",
      "release": "Debian 14",
      "fixedVersion": "3.5.2-1",
      "fix": "DEBIAN-CVE-2021-23177",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-23177",
      "released": "2022-08-23T16:15:09Z"
    },
    {
      "platform": "linux",
      "product": "libarchive",
      "release": "RHEL 8",
      "fixedVersion": "0:3.3.3-3.el8_5",
      "fix": "RHSA-2022:0892",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0892",
      "released": "2022-03-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libarchive",
      "release": "almalinux 8",
      "fixedVersion": "3.3.3-3.el8_5",
      "fix": "ALSA-2022:0892",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0892",
      "released": "2022-03-15T09:11:33Z"
    },
    {
      "platform": "linux",
      "product": "libarchive",
      "release": "ol 8",
      "fixedVersion": "0:3.3.3-3.el8_5",
      "fix": "ELSA-2022-0892",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0892",
      "released": "2022-03-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libarchive",
      "release": "rocky 8",
      "fixedVersion": "0:3.3.3-3.el8_5",
      "fix": "RLSA-2022:0892",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2022-0892",
      "released": "2022-03-15T09:11:33Z"
    },
    {
      "platform": "linux",
      "product": "libarchive-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:3.3.3-3.el8_5",
      "fix": "RHSA-2022:0892",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2022-0892",
      "released": "2022-03-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libarchive-devel",
      "release": "almalinux 8",
      "fixedVersion": "3.3.3-3.el8_5",
      "fix": "ALSA-2022:0892",
      "url": "https://patchblox.com/security/fix/linux/alsa-2022-0892",
      "released": "2022-03-15T09:11:33Z"
    },
    {
      "platform": "linux",
      "product": "libarchive-devel",
      "release": "ol 8",
      "fixedVersion": "0:3.3.3-3.el8_5",
      "fix": "ELSA-2022-0892",
      "url": "https://patchblox.com/security/fix/linux/elsa-2022-0892",
      "released": "2022-03-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libarchive-tools",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "3.4.0-2ubuntu1.1",
      "fix": "libarchive-tools 3.4.0-2ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libarchive-tools-3.4.0-2ubuntu1.1",
      "released": "2021-12-23T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libarchive13",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "3.4.0-2ubuntu1.1",
      "fix": "libarchive13 3.4.0-2ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libarchive13-3.4.0-2ubuntu1.1",
      "released": "2021-12-23T16:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}