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usn-3675-1
Vulnerability from osv_ubuntu
Published
2018-06-11 21:53
Modified
2026-04-27 14:11
Summary
gnupg, gnupg2 vulnerabilities
Details

Marcus Brinkmann discovered that during decryption or verification, GnuPG did not properly filter out terminal sequences when reporting the original filename. An attacker could use this to specially craft a file that would cause an application parsing GnuPG output to incorrectly interpret the status of the cryptographic operation reported by GnuPG. (CVE-2018-12020)

Lance Vick discovered that GnuPG did not enforce configurations where key certification required an offline primary Certify key. An attacker with access to a signing subkey could generate certifications that appeared to be valid. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-9234)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2018-12020",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "gnupg",
            "binary_version": "1.4.16-1ubuntu2.5"
          },
          {
            "binary_name": "gnupg-curl",
            "binary_version": "1.4.16-1ubuntu2.5"
          },
          {
            "binary_name": "gpgv",
            "binary_version": "1.4.16-1ubuntu2.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "gnupg",
        "purl": "pkg:deb/ubuntu/gnupg@1.4.16-1ubuntu2.5?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.16-1ubuntu2.5"
            }
          ],
          "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"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2018-12020",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "gnupg",
            "binary_version": "1.4.20-1ubuntu3.2"
          },
          {
            "binary_name": "gnupg-curl",
            "binary_version": "1.4.20-1ubuntu3.2"
          },
          {
            "binary_name": "gpgv",
            "binary_version": "1.4.20-1ubuntu3.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "gnupg",
        "purl": "pkg:deb/ubuntu/gnupg@1.4.20-1ubuntu3.2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.20-1ubuntu3.2"
            }
          ],
          "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"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2018-9234",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-12020",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "dirmngr",
            "binary_version": "2.2.4-1ubuntu1.1"
          },
          {
            "binary_name": "gnupg",
            "binary_version": "2.2.4-1ubuntu1.1"
          },
          {
            "binary_name": "gnupg-agent",
            "binary_version": "2.2.4-1ubuntu1.1"
          },
          {
            "binary_name": "gnupg-l10n",
            "binary_version": "2.2.4-1ubuntu1.1"
          },
          {
            "binary_name": "gnupg-utils",
            "binary_version": "2.2.4-1ubuntu1.1"
          },
          {
            "binary_name": "gnupg2",
            "binary_version": "2.2.4-1ubuntu1.1"
          },
          {
            "binary_name": "gpg",
            "binary_version": "2.2.4-1ubuntu1.1"
          },
          {
            "binary_name": "gpg-agent",
            "binary_version": "2.2.4-1ubuntu1.1"
          },
          {
            "binary_name": "gpg-wks-client",
            "binary_version": "2.2.4-1ubuntu1.1"
          },
          {
            "binary_name": "gpg-wks-server",
            "binary_version": "2.2.4-1ubuntu1.1"
          },
          {
            "binary_name": "gpgconf",
            "binary_version": "2.2.4-1ubuntu1.1"
          },
          {
            "binary_name": "gpgsm",
            "binary_version": "2.2.4-1ubuntu1.1"
          },
          {
            "binary_name": "gpgv",
            "binary_version": "2.2.4-1ubuntu1.1"
          },
          {
            "binary_name": "gpgv-static",
            "binary_version": "2.2.4-1ubuntu1.1"
          },
          {
            "binary_name": "gpgv-win32",
            "binary_version": "2.2.4-1ubuntu1.1"
          },
          {
            "binary_name": "gpgv2",
            "binary_version": "2.2.4-1ubuntu1.1"
          },
          {
            "binary_name": "scdaemon",
            "binary_version": "2.2.4-1ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "gnupg2",
        "purl": "pkg:deb/ubuntu/gnupg2@2.2.4-1ubuntu1.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.4-1ubuntu1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.15-1ubuntu8",
        "2.2.4-1ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "Marcus Brinkmann discovered that during decryption or verification,\nGnuPG did not properly filter out terminal sequences when reporting the\noriginal filename. An attacker could use this to specially craft a file\nthat would cause an application parsing GnuPG output to incorrectly\ninterpret the status of the cryptographic operation reported by GnuPG.\n(CVE-2018-12020)\n\nLance Vick discovered that GnuPG did not enforce configurations where\nkey certification required an offline primary Certify key. An attacker\nwith access to a signing subkey could generate certifications that\nappeared to be valid. This issue only affected Ubuntu 18.04 LTS.\n(CVE-2018-9234)\n",
  "id": "USN-3675-1",
  "modified": "2026-04-27T14:11:23Z",
  "published": "2018-06-11T21:53:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3675-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-9234"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-12020"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "gnupg, gnupg2 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2018-9234",
    "UBUNTU-CVE-2018-12020"
  ]
}



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