Fix CVE(s): CVE-2018-16869

{
  "id": "48f46929cbd06e0e5cb3b53ef180f7c74a34cfecdd0e262ce2984737c153d475",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1791541027",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Fix CVE(s): CVE-2018-16869",
    "summary": "* SECURITY UPDATE: Bleichenbacher-type side-channel in RSA decryption - debian/patches/CVE-2018-16869-1.patch: add side-channel silent memeql_sec and cnd_memcpy in memeql-sec.c, cnd-memcpy.c, memops.h, ccm.c, examples/rsa-decrypt.c, Makefile.in, testsuite. - debian/patches/CVE-2018-16869-2.patch: add side-channel silent RSA root function _rsa_sec_compute_root and mpn_get_base256 in rsa-sec-compute-root.c, rsa-internal.h, gmp-glue.c, gmp-glue.h, Makefile.in. - debian/patches/CVE-2018-16869-3.patch: add side-channel silent PKCS#1 decoding _pkcs1_sec_decrypt in pkcs1-sec-decrypt.c, rsa-internal.h, Makefile.in, testsuite. - debian/patches/CVE-2018-16869-4.patch: add rsa_sec_decrypt and use the side-channel silent root in rsa_compute_root_tr and rsa_compute_root, and reject bad private keys early, in rsa-sec-decrypt.c, rsa-sign-tr.c, rsa-sign.c, rsa-sec-compute-root.c, rsa.h, Makefile.in, testsuite. - debian/patches/CVE-2018-16869-5.patch: require input in range and of fixed size in rsa_sec_decrypt, rsa_decrypt_tr, rsa_decrypt and rsa_sec_compute_root_tr, and check the message length in _pkcs1_sec_decrypt, in pkcs1-sec-decrypt.c, rsa-decrypt-tr.c, rsa-decrypt.c, rsa-sec-decrypt.c, rsa-sign-tr.c, rsa.h, testsuite. - debian/patches/CVE-2018-16869-6.patch: strip the PKCS#1 padding in rsa_decrypt and rsa_decrypt_tr with the side-channel silent _pkcs1_sec_decrypt_variable, in pkcs1-sec-decrypt.c, pkcs1-decrypt.c, rsa-decrypt-tr.c, rsa-internal.h, testsuite. - debian/libhogweed4.symbols",
    "evidence": "osv:CLSA-2026-1791541027",
    "products": [
      {
        "name": {
          "value": "libhogweed4",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.2-1ubuntu0.16.04.2+tuxcare.els1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libnettle6",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.2-1ubuntu0.16.04.2+tuxcare.els1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "nettle-bin",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.2-1ubuntu0.16.04.2+tuxcare.els1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "nettle-dev",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.2-1ubuntu0.16.04.2+tuxcare.els1",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1791541027",
      "aliases": [
        "CLSA-2026-1791541027"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.2-1ubuntu0.16.04.2+tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "libhogweed4",
            "purl": "pkg:deb/tuxcare/libhogweed4?distro=ubuntu-16.04",
            "ecosystem": "TuxCare:Ubuntu:16.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791541027.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.2-1ubuntu0.16.04.2+tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "libnettle6",
            "purl": "pkg:deb/tuxcare/libnettle6?distro=ubuntu-16.04",
            "ecosystem": "TuxCare:Ubuntu:16.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791541027.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.2-1ubuntu0.16.04.2+tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "nettle-bin",
            "purl": "pkg:deb/tuxcare/nettle-bin?distro=ubuntu-16.04",
            "ecosystem": "TuxCare:Ubuntu:16.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791541027.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.2-1ubuntu0.16.04.2+tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "nettle-dev",
            "purl": "pkg:deb/tuxcare/nettle-dev?distro=ubuntu-16.04",
            "ecosystem": "TuxCare:Ubuntu:16.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791541027.json"
          }
        }
      ],
      "modified": "2026-10-26T09:32:02.514686342Z",
      "provider": "osv",
      "upstream": [
        "CVE-2018-16869",
        "CVE-2021-3580"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/ubuntu16.04els/CLSA-2026-1791541027.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2018-16869"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2018-16869",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2021-3580",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 449454,
  "published_at": "2026-10-09T10:17:18+00:00"
}