{
  "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-2014-3591: use ciphertext blinding for Elgamal decryption\n  (prerequisite for CVE-2021-33560)\n- CVE-2021-33560: add exponent blinding to Elgamal decryption to mitigate\n  side-channel attack on mpi_powm, and always use a full-size ephemeral k\n  in Elgamal encryption",
        "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-2026:1793167609",
        "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1793167609"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/oraclelinux6els/advisories/2026/clsa-2026_1793167609.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-10-28T06:07:26Z",
      "generator": {
        "date": "2026-10-28T06:07:26Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CLSA-2026:1793167609",
      "initial_release_date": "2026-10-28T06:07:26Z",
      "revision_history": [
        {
          "date": "2026-10-28T06:07:26Z",
          "number": "1",
          "summary": "Initial version"
        }
      ],
      "status": "final",
      "version": "1"
    },
    "title": "libgcrypt: Fix of CVE-2021-33560"
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Oracle Linux 6",
                "product": {
                  "name": "Oracle Linux 6",
                  "product_id": "Oracle-Linux-6",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Oracle Linux"
          }
        ],
        "category": "vendor",
        "name": "Oracle Corporation"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "libgcrypt-0:1.4.5-12.el6_8.tuxcare.els1.x86_64",
                "product": {
                  "name": "libgcrypt-0:1.4.5-12.el6_8.tuxcare.els1.x86_64",
                  "product_id": "libgcrypt-0:1.4.5-12.el6_8.tuxcare.els1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/cloudlinux/libgcrypt@1.4.5-12.el6_8.tuxcare.els1?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "libgcrypt-devel-0:1.4.5-12.el6_8.tuxcare.els1.x86_64",
                "product": {
                  "name": "libgcrypt-devel-0:1.4.5-12.el6_8.tuxcare.els1.x86_64",
                  "product_id": "libgcrypt-devel-0:1.4.5-12.el6_8.tuxcare.els1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/cloudlinux/libgcrypt-devel@1.4.5-12.el6_8.tuxcare.els1?arch=x86_64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "libgcrypt-0:1.4.5-12.el6_8.tuxcare.els1.i686",
                "product": {
                  "name": "libgcrypt-0:1.4.5-12.el6_8.tuxcare.els1.i686",
                  "product_id": "libgcrypt-0:1.4.5-12.el6_8.tuxcare.els1.i686",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/cloudlinux/libgcrypt@1.4.5-12.el6_8.tuxcare.els1?arch=i686"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "libgcrypt-devel-0:1.4.5-12.el6_8.tuxcare.els1.i686",
                "product": {
                  "name": "libgcrypt-devel-0:1.4.5-12.el6_8.tuxcare.els1.i686",
                  "product_id": "libgcrypt-devel-0:1.4.5-12.el6_8.tuxcare.els1.i686",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/cloudlinux/libgcrypt-devel@1.4.5-12.el6_8.tuxcare.els1?arch=i686"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "i686"
          }
        ],
        "category": "vendor",
        "name": "CloudLinux"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libgcrypt-0:1.4.5-12.el6_8.tuxcare.els1.x86_64 as a component of Oracle Linux 6",
          "product_id": "Oracle-Linux-6:libgcrypt-0:1.4.5-12.el6_8.tuxcare.els1.x86_64"
        },
        "product_reference": "libgcrypt-0:1.4.5-12.el6_8.tuxcare.els1.x86_64",
        "relates_to_product_reference": "Oracle-Linux-6"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libgcrypt-0:1.4.5-12.el6_8.tuxcare.els1.i686 as a component of Oracle Linux 6",
          "product_id": "Oracle-Linux-6:libgcrypt-0:1.4.5-12.el6_8.tuxcare.els1.i686"
        },
        "product_reference": "libgcrypt-0:1.4.5-12.el6_8.tuxcare.els1.i686",
        "relates_to_product_reference": "Oracle-Linux-6"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libgcrypt-devel-0:1.4.5-12.el6_8.tuxcare.els1.x86_64 as a component of Oracle Linux 6",
          "product_id": "Oracle-Linux-6:libgcrypt-devel-0:1.4.5-12.el6_8.tuxcare.els1.x86_64"
        },
        "product_reference": "libgcrypt-devel-0:1.4.5-12.el6_8.tuxcare.els1.x86_64",
        "relates_to_product_reference": "Oracle-Linux-6"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libgcrypt-devel-0:1.4.5-12.el6_8.tuxcare.els1.i686 as a component of Oracle Linux 6",
          "product_id": "Oracle-Linux-6:libgcrypt-devel-0:1.4.5-12.el6_8.tuxcare.els1.i686"
        },
        "product_reference": "libgcrypt-devel-0:1.4.5-12.el6_8.tuxcare.els1.i686",
        "relates_to_product_reference": "Oracle-Linux-6"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-33560",
      "cwe": {
        "id": "CWE-203",
        "name": "Observable Discrepancy"
      },
      "notes": [
        {
          "category": "description",
          "text": "Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "fixed": [
          "Oracle-Linux-6:libgcrypt-0:1.4.5-12.el6_8.tuxcare.els1.i686",
          "Oracle-Linux-6:libgcrypt-0:1.4.5-12.el6_8.tuxcare.els1.x86_64",
          "Oracle-Linux-6:libgcrypt-devel-0:1.4.5-12.el6_8.tuxcare.els1.i686",
          "Oracle-Linux-6:libgcrypt-devel-0:1.4.5-12.el6_8.tuxcare.els1.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2021-33560"
        },
        {
          "category": "external",
          "summary": "https://dev.gnupg.org/T5305",
          "url": "https://dev.gnupg.org/T5305"
        },
        {
          "category": "external",
          "summary": "https://dev.gnupg.org/T5328",
          "url": "https://dev.gnupg.org/T5328"
        },
        {
          "category": "external",
          "summary": "https://dev.gnupg.org/T5466",
          "url": "https://dev.gnupg.org/T5466"
        },
        {
          "category": "external",
          "summary": "https://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61",
          "url": "https://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61"
        },
        {
          "category": "external",
          "summary": "https://lists.debian.org/debian-lts-announce/2021/06/msg00021.html",
          "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00021.html"
        },
        {
          "category": "external",
          "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/",
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/"
        },
        {
          "category": "external",
          "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/",
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/"
        },
        {
          "category": "external",
          "summary": "https://security.gentoo.org/glsa/202210-13",
          "url": "https://security.gentoo.org/glsa/202210-13"
        },
        {
          "category": "external",
          "summary": "https://www.oracle.com/security-alerts/cpuapr2022.html",
          "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
        },
        {
          "category": "external",
          "summary": "https://www.oracle.com/security-alerts/cpujan2022.html",
          "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
        },
        {
          "category": "external",
          "summary": "https://www.oracle.com/security-alerts/cpujul2022.html",
          "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
        },
        {
          "category": "external",
          "summary": "https://www.oracle.com/security-alerts/cpuoct2021.html",
          "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
        },
        {
          "category": "external",
          "summary": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html",
          "url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"
        }
      ],
      "release_date": "2021-06-08T11:15:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-10-28T06:06:50.658082Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1793167609",
          "product_ids": [
            "Oracle-Linux-6:libgcrypt-0:1.4.5-12.el6_8.tuxcare.els1.i686",
            "Oracle-Linux-6:libgcrypt-0:1.4.5-12.el6_8.tuxcare.els1.x86_64",
            "Oracle-Linux-6:libgcrypt-devel-0:1.4.5-12.el6_8.tuxcare.els1.i686",
            "Oracle-Linux-6:libgcrypt-devel-0:1.4.5-12.el6_8.tuxcare.els1.x86_64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1793167609"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    }
  ]
}