ubuntu-cve-2018-16837
Vulnerability from osv_ubuntu
Published
2018-10-23 00:00
Modified
2025-10-14 16:48
Summary
Details

Ansible "User" module leaks any data which is passed on as a parameter to ssh-keygen. This could lean in undesirable situations such as passphrases credentials passed as a parameter for the ssh-keygen executable. Showing those credentials in clear text form for every user which have access just to the process list.

Severity
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "ansible",
            "binary_version": "1.5.4+dfsg-1ubuntu0.1~esm3"
          },
          {
            "binary_name": "ansible-fireball",
            "binary_version": "1.5.4+dfsg-1ubuntu0.1~esm3"
          },
          {
            "binary_name": "ansible-node-fireball",
            "binary_version": "1.5.4+dfsg-1ubuntu0.1~esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "ansible",
        "purl": "pkg:deb/ubuntu/ansible@1.5.4+dfsg-1ubuntu0.1~esm3?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1+dfsg-1",
        "1.3.4+dfsg-1",
        "1.4.0+dfsg-1",
        "1.4.1+dfsg-1",
        "1.4.3+dfsg-1",
        "1.4.4+dfsg-1",
        "1.5.4+dfsg-1",
        "1.5.4+dfsg-1ubuntu0.1~esm1",
        "1.5.4+dfsg-1ubuntu0.1~esm2",
        "1.5.4+dfsg-1ubuntu0.1~esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ansible",
            "binary_version": "2.0.0.2-2ubuntu1.3"
          },
          {
            "binary_name": "ansible-fireball",
            "binary_version": "2.0.0.2-2ubuntu1.3"
          },
          {
            "binary_name": "ansible-node-fireball",
            "binary_version": "2.0.0.2-2ubuntu1.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "ansible",
        "purl": "pkg:deb/ubuntu/ansible@2.0.0.2-2ubuntu1.3?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.0.2-2ubuntu1.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.9.2+dfsg-2",
        "1.9.4-1",
        "2.0.0.2-2",
        "2.0.0.2-2ubuntu1",
        "2.0.0.2-2ubuntu1.1",
        "2.0.0.2-2ubuntu1.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ansible",
            "binary_version": "2.5.1+dfsg-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "ansible",
        "purl": "pkg:deb/ubuntu/ansible@2.5.1+dfsg-1ubuntu0.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.5.1+dfsg-1ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.3.1.0+dfsg-2",
        "2.5.0+dfsg-1",
        "2.5.1+dfsg-1"
      ]
    }
  ],
  "aliases": [],
  "details": "Ansible \"User\" module leaks any data which is passed on as a parameter to ssh-keygen. This could lean in undesirable situations such as passphrases credentials passed as a parameter for the ssh-keygen executable. Showing those credentials in clear text form for every user which have access just to the process list.",
  "id": "UBUNTU-CVE-2018-16837",
  "modified": "2025-10-14T16:48:10Z",
  "published": "2018-10-23T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-16837"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16837"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ansible/ansible/pull/47436"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4072-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2018-16837"
    }
  ],
  "related": [
    "USN-4072-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2018-16837"
  ]
}



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