ubuntu-cve-2019-13050
Vulnerability from osv_ubuntu
Published
2019-06-29 17:15
Modified
2026-01-08 04:52
Summary
Details

Interaction between the sks-keyserver code through 1.2.0 of the SKS keyserver network, and GnuPG through 2.2.16, makes it risky to have a GnuPG keyserver configuration line referring to a host on the SKS keyserver network. Retrieving data from this network may cause a persistent denial of service, because of a Certificate Spamming Attack.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gnupg",
            "binary_version": "1.4.16-1ubuntu2.6+esm2"
          },
          {
            "binary_name": "gnupg-curl",
            "binary_version": "1.4.16-1ubuntu2.6+esm2"
          },
          {
            "binary_name": "gpgv",
            "binary_version": "1.4.16-1ubuntu2.6+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "gnupg",
        "purl": "pkg:deb/ubuntu/gnupg@1.4.16-1ubuntu2.6+esm2?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.4.14-1ubuntu2",
        "1.4.15-1.1ubuntu1",
        "1.4.15-1.1ubuntu2",
        "1.4.15-2ubuntu1",
        "1.4.16-1ubuntu1",
        "1.4.16-1ubuntu2",
        "1.4.16-1ubuntu2.1",
        "1.4.16-1ubuntu2.3",
        "1.4.16-1ubuntu2.4",
        "1.4.16-1ubuntu2.5",
        "1.4.16-1ubuntu2.6",
        "1.4.16-1ubuntu2.6+esm1",
        "1.4.16-1ubuntu2.6+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gnupg",
            "binary_version": "1.4.20-1ubuntu3.3+esm3"
          },
          {
            "binary_name": "gnupg-curl",
            "binary_version": "1.4.20-1ubuntu3.3+esm3"
          },
          {
            "binary_name": "gpgv",
            "binary_version": "1.4.20-1ubuntu3.3+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "gnupg",
        "purl": "pkg:deb/ubuntu/gnupg@1.4.20-1ubuntu3.3+esm3?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.4.18-7ubuntu1",
        "1.4.19-6ubuntu1",
        "1.4.20-1ubuntu1",
        "1.4.20-1ubuntu2",
        "1.4.20-1ubuntu3",
        "1.4.20-1ubuntu3.1",
        "1.4.20-1ubuntu3.2",
        "1.4.20-1ubuntu3.3",
        "1.4.20-1ubuntu3.3+esm2",
        "1.4.20-1ubuntu3.3+esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "dirmngr",
            "binary_version": "2.1.11-6ubuntu2.1+esm3"
          },
          {
            "binary_name": "gnupg-agent",
            "binary_version": "2.1.11-6ubuntu2.1+esm3"
          },
          {
            "binary_name": "gnupg2",
            "binary_version": "2.1.11-6ubuntu2.1+esm3"
          },
          {
            "binary_name": "gpgsm",
            "binary_version": "2.1.11-6ubuntu2.1+esm3"
          },
          {
            "binary_name": "gpgv2",
            "binary_version": "2.1.11-6ubuntu2.1+esm3"
          },
          {
            "binary_name": "scdaemon",
            "binary_version": "2.1.11-6ubuntu2.1+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "gnupg2",
        "purl": "pkg:deb/ubuntu/gnupg2@2.1.11-6ubuntu2.1+esm3?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0.28-3ubuntu1",
        "2.0.28-3ubuntu2",
        "2.1.11-6ubuntu1",
        "2.1.11-6ubuntu2",
        "2.1.11-6ubuntu2.1",
        "2.1.11-6ubuntu2.1+esm1",
        "2.1.11-6ubuntu2.1+esm2",
        "2.1.11-6ubuntu2.1+esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "sks",
            "binary_version": "1.1.5-4build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "sks",
        "purl": "pkg:deb/ubuntu/sks@1.1.5-4build2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.5-4",
        "1.1.5-4build1",
        "1.1.5-4build2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "dirmngr",
            "binary_version": "2.2.4-1ubuntu1.5"
          },
          {
            "binary_name": "gnupg",
            "binary_version": "2.2.4-1ubuntu1.5"
          },
          {
            "binary_name": "gnupg-agent",
            "binary_version": "2.2.4-1ubuntu1.5"
          },
          {
            "binary_name": "gnupg-l10n",
            "binary_version": "2.2.4-1ubuntu1.5"
          },
          {
            "binary_name": "gnupg-utils",
            "binary_version": "2.2.4-1ubuntu1.5"
          },
          {
            "binary_name": "gnupg2",
            "binary_version": "2.2.4-1ubuntu1.5"
          },
          {
            "binary_name": "gpg",
            "binary_version": "2.2.4-1ubuntu1.5"
          },
          {
            "binary_name": "gpg-agent",
            "binary_version": "2.2.4-1ubuntu1.5"
          },
          {
            "binary_name": "gpg-wks-client",
            "binary_version": "2.2.4-1ubuntu1.5"
          },
          {
            "binary_name": "gpg-wks-server",
            "binary_version": "2.2.4-1ubuntu1.5"
          },
          {
            "binary_name": "gpgconf",
            "binary_version": "2.2.4-1ubuntu1.5"
          },
          {
            "binary_name": "gpgsm",
            "binary_version": "2.2.4-1ubuntu1.5"
          },
          {
            "binary_name": "gpgv",
            "binary_version": "2.2.4-1ubuntu1.5"
          },
          {
            "binary_name": "gpgv-static",
            "binary_version": "2.2.4-1ubuntu1.5"
          },
          {
            "binary_name": "gpgv-win32",
            "binary_version": "2.2.4-1ubuntu1.5"
          },
          {
            "binary_name": "gpgv2",
            "binary_version": "2.2.4-1ubuntu1.5"
          },
          {
            "binary_name": "scdaemon",
            "binary_version": "2.2.4-1ubuntu1.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "gnupg2",
        "purl": "pkg:deb/ubuntu/gnupg2@2.2.4-1ubuntu1.5?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.4-1ubuntu1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.15-1ubuntu8",
        "2.2.4-1ubuntu1",
        "2.2.4-1ubuntu1.1",
        "2.2.4-1ubuntu1.2",
        "2.2.4-1ubuntu1.3",
        "2.2.4-1ubuntu1.4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "sks",
            "binary_version": "1.1.6-14"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "sks",
        "purl": "pkg:deb/ubuntu/sks@1.1.6-14?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.6-13",
        "1.1.6-14"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "sks",
            "binary_version": "1.1.6-14"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "sks",
        "purl": "pkg:deb/ubuntu/sks@1.1.6-14?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.6-14"
      ]
    }
  ],
  "aliases": [],
  "details": "Interaction between the sks-keyserver code through 1.2.0 of the SKS keyserver network, and GnuPG through 2.2.16, makes it risky to have a GnuPG keyserver configuration line referring to a host on the SKS keyserver network. Retrieving data from this network may cause a persistent denial of service, because of a Certificate Spamming Attack.",
  "id": "UBUNTU-CVE-2019-13050",
  "modified": "2026-01-08T04:52:46Z",
  "published": "2019-06-29T17:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-13050"
    },
    {
      "type": "REPORT",
      "url": "https://gist.github.com/rjhansen/67ab921ffb4084c865b3618d6955275f"
    },
    {
      "type": "REPORT",
      "url": "https://lists.gnupg.org/pipermail/gnupg-announce/2019q3/000439.html"
    },
    {
      "type": "REPORT",
      "url": "https://tech.michaelaltfield.net/2019/07/14/mitigating-poisoned-pgp-certificates/"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5431-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-13050"
    }
  ],
  "related": [
    "USN-5431-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2019-13050"
  ]
}



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