ubuntu-cve-2016-7798
Vulnerability from osv_ubuntu
Published
2017-01-30 00:00
Modified
2026-04-22 07:38
Summary
Details

The openssl gem for Ruby uses the same initialization vector (IV) in GCM Mode (aes-*-gcm) when the IV is set before the key, which makes it easier for context-dependent attackers to bypass the encryption protection mechanism.

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libruby1.9.1",
            "binary_version": "1.9.3.484-2ubuntu1.3"
          },
          {
            "binary_name": "libtcltk-ruby1.9.1",
            "binary_version": "1.9.3.484-2ubuntu1.3"
          },
          {
            "binary_name": "ri1.9.1",
            "binary_version": "1.9.3.484-2ubuntu1.3"
          },
          {
            "binary_name": "ruby1.9.1",
            "binary_version": "1.9.3.484-2ubuntu1.3"
          },
          {
            "binary_name": "ruby1.9.1-examples",
            "binary_version": "1.9.3.484-2ubuntu1.3"
          },
          {
            "binary_name": "ruby1.9.1-full",
            "binary_version": "1.9.3.484-2ubuntu1.3"
          },
          {
            "binary_name": "ruby1.9.3",
            "binary_version": "1.9.3.484-2ubuntu1.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "ruby1.9.1",
        "purl": "pkg:deb/ubuntu/ruby1.9.1@1.9.3.484-2ubuntu1.3?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.9.3.484-2ubuntu1.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.9.3.194-8.1ubuntu2",
        "1.9.3.448-1ubuntu1",
        "1.9.3.448-1ubuntu2",
        "1.9.3.484-1ubuntu1",
        "1.9.3.484-1ubuntu2",
        "1.9.3.484-2ubuntu1",
        "1.9.3.484-2ubuntu1.1",
        "1.9.3.484-2ubuntu1.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libruby2.0",
            "binary_version": "2.0.0.484-1ubuntu2.4"
          },
          {
            "binary_name": "ruby2.0",
            "binary_version": "2.0.0.484-1ubuntu2.4"
          },
          {
            "binary_name": "ruby2.0-tcltk",
            "binary_version": "2.0.0.484-1ubuntu2.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "ruby2.0",
        "purl": "pkg:deb/ubuntu/ruby2.0@2.0.0.484-1ubuntu2.4?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.0.484-1ubuntu2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0.0.299-2",
        "2.0.0.343-1",
        "2.0.0.343-1ubuntu1",
        "2.0.0.353-1",
        "2.0.0.353-1ubuntu1",
        "2.0.0.484-1ubuntu1",
        "2.0.0.484-1ubuntu2",
        "2.0.0.484-1ubuntu2.1",
        "2.0.0.484-1ubuntu2.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libruby2.3",
            "binary_version": "2.3.1-2~16.04.2"
          },
          {
            "binary_name": "ruby2.3",
            "binary_version": "2.3.1-2~16.04.2"
          },
          {
            "binary_name": "ruby2.3-tcltk",
            "binary_version": "2.3.1-2~16.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "ruby2.3",
        "purl": "pkg:deb/ubuntu/ruby2.3@2.3.1-2~16.04.2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.3.1-2~16.04.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.3.0-1",
        "2.3.0-2",
        "2.3.0-4ubuntu2",
        "2.3.0-4ubuntu3",
        "2.3.0-5ubuntu1",
        "2.3.1-2~16.04"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "ruby-attr-encrypted",
            "binary_version": "1.3.4-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "ruby-attr-encrypted",
        "purl": "pkg:deb/ubuntu/ruby-attr-encrypted@1.3.4-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.4-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "ruby-encryptor",
            "binary_version": "2.0.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "ruby-encryptor",
        "purl": "pkg:deb/ubuntu/ruby-encryptor@2.0.0-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.0-1",
        "2.0.0-1"
      ]
    }
  ],
  "aliases": [],
  "details": "The openssl gem for Ruby uses the same initialization vector (IV) in GCM Mode (aes-*-gcm) when the IV is set before the key, which makes it easier for context-dependent attackers to bypass the encryption protection mechanism.",
  "id": "UBUNTU-CVE-2016-7798",
  "modified": "2026-04-22T07:38:02Z",
  "published": "2017-01-30T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-7798"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/attr-encrypted/attr_encrypted/issues/203"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/attr-encrypted/encryptor/pull/22"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3365-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2016-7798"
    }
  ],
  "related": [
    "USN-3365-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2016-7798"
  ]
}



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