ubuntu-cve-2018-16869
Vulnerability from osv_ubuntu
Published
2018-12-03 14:29
Modified
2026-04-22 07:38
Summary
Details

A Bleichenbacher type side-channel based padding oracle attack was found in the way nettle handles endian conversion of RSA decrypted PKCS#1 v1.5 data. An attacker who is able to run a process on the same physical core as the victim process, could use this flaw extract plaintext or in some cases downgrade any TLS connections to a vulnerable server.

Severity
5.7 (Medium)
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N
4.7 (Medium)
CVSS:3.0/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
5.7 (Medium)
CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libhogweed2",
            "binary_version": "2.7.1-1ubuntu0.2"
          },
          {
            "binary_name": "libnettle4",
            "binary_version": "2.7.1-1ubuntu0.2"
          },
          {
            "binary_name": "nettle-bin",
            "binary_version": "2.7.1-1ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "nettle",
        "purl": "pkg:deb/ubuntu/nettle@2.7.1-1ubuntu0.2?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.7.1-1",
        "2.7.1-1ubuntu0.1",
        "2.7.1-1ubuntu0.2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libhogweed4",
            "binary_version": "3.2-1ubuntu0.16.04.2"
          },
          {
            "binary_name": "libnettle6",
            "binary_version": "3.2-1ubuntu0.16.04.2"
          },
          {
            "binary_name": "nettle-bin",
            "binary_version": "3.2-1ubuntu0.16.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "nettle",
        "purl": "pkg:deb/ubuntu/nettle@3.2-1ubuntu0.16.04.2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.1.1-4",
        "3.2-1",
        "3.2-1ubuntu0.16.04.1",
        "3.2-1ubuntu0.16.04.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libhogweed4",
            "binary_version": "3.4.1-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "libnettle6",
            "binary_version": "3.4.1-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "nettle-bin",
            "binary_version": "3.4.1-0ubuntu0.18.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "nettle",
        "purl": "pkg:deb/ubuntu/nettle@3.4.1-0ubuntu0.18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.4.1-0ubuntu0.18.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.3-2",
        "3.4-1",
        "3.4-1ubuntu0.1"
      ]
    }
  ],
  "aliases": [],
  "details": "A Bleichenbacher type side-channel based padding oracle attack was found in the way nettle handles endian conversion of RSA decrypted PKCS#1 v1.5 data. An attacker who is able to run a process on the same physical core as the victim process, could use this flaw extract plaintext or in some cases downgrade any TLS connections to a vulnerable server.",
  "id": "UBUNTU-CVE-2018-16869",
  "modified": "2026-04-22T07:38:43Z",
  "published": "2018-12-03T14:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-16869"
    },
    {
      "type": "REPORT",
      "url": "http://cat.eyalro.net/"
    },
    {
      "type": "REPORT",
      "url": "https://lists.lysator.liu.se/pipermail/nettle-bugs/2018/007363.html"
    },
    {
      "type": "REPORT",
      "url": "https://lists.debian.org/debian-lts/2019/03/msg00021.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4990-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2018-16869"
    }
  ],
  "related": [
    "USN-4990-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.0/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2018-16869"
  ]
}



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