{
  "document": {
    "aggregate_severity": {
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      },
      {
        "category": "details",
        "text": "CVE-2021-23177: fix extraction of ACLs to the symlink target instead of the link\n- CVE-2021-31566: do not follow symlinks when fixing up permissions and file flags\n- CVE-2026-5121: validate pz_log2_bs in the iso9660 zisofs reader",
        "title": "Details"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792818341",
        "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792818341"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/centos6els/advisories/2026/clsa-2026_1792818341.json"
      }
    ],
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      "current_release_date": "2026-10-26T15:14:03Z",
      "generator": {
        "date": "2026-10-26T15:14:03Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CLSA-2026:1792818341",
      "initial_release_date": "2026-10-24T05:05:43Z",
      "revision_history": [
        {
          "date": "2026-10-24T05:05:43Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-10-26T15:14:03Z",
          "number": "2",
          "summary": "Official Publication"
        }
      ],
      "status": "final",
      "version": "2"
    },
    "title": "libarchive: Fix of 2 CVEs"
  },
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                "category": "product_name",
                "name": "Community Enterprise Operating System 6",
                "product": {
                  "name": "Community Enterprise Operating System 6",
                  "product_id": "CentOS-6",
                  "product_identification_helper": {
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        ],
        "category": "vendor",
        "name": "Red Hat, Inc."
      },
      {
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          {
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            "category": "architecture",
            "name": "i686"
          }
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        "category": "vendor",
        "name": "CloudLinux"
      }
    ],
    "relationships": [
      {
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        "full_product_name": {
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          "product_id": "CentOS-6:libarchive-0:2.8.3-7.el6_8.tuxcare.els1.x86_64"
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      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-31566",
      "cwe": {
        "id": "CWE-59",
        "name": "Improper Link Resolution Before File Access ('Link Following')"
      },
      "notes": [
        {
          "category": "description",
          "text": "An improper link resolution flaw can occur while extracting an archive leading to changing modes, times, access control lists, and flags of a file outside of the archive. An attacker may provide a malicious archive to a victim user, who would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to gain more privileges in a system.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "fixed": [
          "CentOS-6:libarchive-0:2.8.3-7.el6_8.tuxcare.els1.i686",
          "CentOS-6:libarchive-0:2.8.3-7.el6_8.tuxcare.els1.x86_64",
          "CentOS-6:libarchive-devel-0:2.8.3-7.el6_8.tuxcare.els1.i686",
          "CentOS-6:libarchive-devel-0:2.8.3-7.el6_8.tuxcare.els1.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2021-31566"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/security/cve/CVE-2021-31566",
          "url": "https://access.redhat.com/security/cve/CVE-2021-31566"
        },
        {
          "category": "external",
          "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2024237",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2024237"
        },
        {
          "category": "external",
          "summary": "https://github.com/libarchive/libarchive/commit/b41daecb5ccb4c8e3b2c53fd6147109fc12c3043",
          "url": "https://github.com/libarchive/libarchive/commit/b41daecb5ccb4c8e3b2c53fd6147109fc12c3043"
        },
        {
          "category": "external",
          "summary": "https://github.com/libarchive/libarchive/issues/1566",
          "url": "https://github.com/libarchive/libarchive/issues/1566"
        },
        {
          "category": "external",
          "summary": "https://lists.debian.org/debian-lts-announce/2022/11/msg00030.html",
          "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00030.html"
        }
      ],
      "release_date": "2022-08-23T16:15:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-10-24T05:05:43.363495Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1792818341",
          "product_ids": [
            "CentOS-6:libarchive-0:2.8.3-7.el6_8.tuxcare.els1.i686",
            "CentOS-6:libarchive-0:2.8.3-7.el6_8.tuxcare.els1.x86_64",
            "CentOS-6:libarchive-devel-0:2.8.3-7.el6_8.tuxcare.els1.i686",
            "CentOS-6:libarchive-devel-0:2.8.3-7.el6_8.tuxcare.els1.x86_64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792818341"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
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        "id": "CWE-59",
        "name": "Improper Link Resolution Before File Access ('Link Following')"
      },
      "notes": [
        {
          "category": "description",
          "text": "An improper link resolution flaw while extracting an archive can lead to changing the access control list (ACL) of the target of the link. An attacker may provide a malicious archive to a victim user, who would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to change the ACL of a file on the system and gain more privileges.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
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      },
      "references": [
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2021-23177"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/security/cve/CVE-2021-23177",
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        },
        {
          "category": "external",
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          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2024245"
        },
        {
          "category": "external",
          "summary": "https://github.com/libarchive/libarchive/commit/fba4f123cc456d2b2538f811bb831483bf336bad",
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        },
        {
          "category": "external",
          "summary": "https://github.com/libarchive/libarchive/issues/1565",
          "url": "https://github.com/libarchive/libarchive/issues/1565"
        },
        {
          "category": "external",
          "summary": "https://lists.debian.org/debian-lts-announce/2022/11/msg00030.html",
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        }
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        }
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}