ubuntu-cve-2016-2047
Vulnerability from osv_ubuntu
Published
2016-01-27 00:00
Modified
2026-04-22 07:37
Summary
Details

The ssl_verify_server_cert function in sql-common/client.c in MariaDB before 5.5.47, 10.0.x before 10.0.23, and 10.1.x before 10.1.10; Oracle MySQL 5.5.48 and earlier, 5.6.29 and earlier, and 5.7.11 and earlier; and Percona Server do not properly verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via a "/CN=" string in a field in a certificate, as demonstrated by "/OU=/CN=bar.com/CN=foo.com."

Severity
5.9 (Medium)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libmariadbclient18",
            "binary_version": "5.5.47-1ubuntu0.14.04.1"
          },
          {
            "binary_name": "mariadb-client",
            "binary_version": "5.5.47-1ubuntu0.14.04.1"
          },
          {
            "binary_name": "mariadb-client-5.5",
            "binary_version": "5.5.47-1ubuntu0.14.04.1"
          },
          {
            "binary_name": "mariadb-client-core-5.5",
            "binary_version": "5.5.47-1ubuntu0.14.04.1"
          },
          {
            "binary_name": "mariadb-common",
            "binary_version": "5.5.47-1ubuntu0.14.04.1"
          },
          {
            "binary_name": "mariadb-server",
            "binary_version": "5.5.47-1ubuntu0.14.04.1"
          },
          {
            "binary_name": "mariadb-server-5.5",
            "binary_version": "5.5.47-1ubuntu0.14.04.1"
          },
          {
            "binary_name": "mariadb-server-core-5.5",
            "binary_version": "5.5.47-1ubuntu0.14.04.1"
          },
          {
            "binary_name": "mariadb-test",
            "binary_version": "5.5.47-1ubuntu0.14.04.1"
          },
          {
            "binary_name": "mariadb-test-5.5",
            "binary_version": "5.5.47-1ubuntu0.14.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "mariadb-5.5",
        "purl": "pkg:deb/ubuntu/mariadb-5.5@5.5.47-1ubuntu0.14.04.1?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.5.47-1ubuntu0.14.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.5.32-1ubuntu1",
        "5.5.35-1ubuntu1",
        "5.5.36-1",
        "5.5.37-0ubuntu0.14.04.1",
        "5.5.39-0ubuntu0.14.04.1",
        "5.5.40-0ubuntu0.14.04.1",
        "5.5.41-0ubuntu0.14.04.2",
        "5.5.41-1ubuntu0.14.04.1",
        "5.5.43-1ubuntu0.14.04.2",
        "5.5.44-1ubuntu0.14.04.1",
        "5.5.46-1ubuntu0.14.04.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libmysqlclient18",
            "binary_version": "5.5.49-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "libmysqld-pic",
            "binary_version": "5.5.49-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "mysql-client",
            "binary_version": "5.5.49-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "mysql-client-5.5",
            "binary_version": "5.5.49-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "mysql-client-core-5.5",
            "binary_version": "5.5.49-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "mysql-common",
            "binary_version": "5.5.49-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "mysql-server",
            "binary_version": "5.5.49-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "mysql-server-5.5",
            "binary_version": "5.5.49-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "mysql-server-core-5.5",
            "binary_version": "5.5.49-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "mysql-source-5.5",
            "binary_version": "5.5.49-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "mysql-testsuite",
            "binary_version": "5.5.49-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "mysql-testsuite-5.5",
            "binary_version": "5.5.49-0ubuntu0.14.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "mysql-5.5",
        "purl": "pkg:deb/ubuntu/mysql-5.5@5.5.49-0ubuntu0.14.04.1?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.5.49-0ubuntu0.14.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.5.32-0ubuntu7",
        "5.5.34-0ubuntu1",
        "5.5.34-0ubuntu2",
        "5.5.35-0ubuntu1",
        "5.5.35+dfsg-1ubuntu1",
        "5.5.37-0ubuntu0.14.04.1",
        "5.5.38-0ubuntu0.14.04.1",
        "5.5.40-0ubuntu0.14.04.1",
        "5.5.41-0ubuntu0.14.04.1",
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        "5.5.44-0ubuntu0.14.04.1",
        "5.5.46-0ubuntu0.14.04.2",
        "5.5.47-0ubuntu0.14.04.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "mysql-client-5.6",
            "binary_version": "5.6.30-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "mysql-client-core-5.6",
            "binary_version": "5.6.30-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "mysql-common-5.6",
            "binary_version": "5.6.30-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "mysql-server-5.6",
            "binary_version": "5.6.30-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "mysql-server-core-5.6",
            "binary_version": "5.6.30-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "mysql-source-5.6",
            "binary_version": "5.6.30-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "mysql-testsuite-5.6",
            "binary_version": "5.6.30-0ubuntu0.14.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "mysql-5.6",
        "purl": "pkg:deb/ubuntu/mysql-5.6@5.6.30-0ubuntu0.14.04.1?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.6.30-0ubuntu0.14.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.6.15-0ubuntu1",
        "5.6.15-1~exp2",
        "5.6.16-1~exp1",
        "5.6.17-0ubuntu0.14.04.1",
        "5.6.19-0ubuntu0.14.04.1",
        "5.6.27-0ubuntu0.14.04.1",
        "5.6.28-0ubuntu0.14.04.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libmysqlclient20",
            "binary_version": "5.7.12-0ubuntu1"
          },
          {
            "binary_name": "mysql-client",
            "binary_version": "5.7.12-0ubuntu1"
          },
          {
            "binary_name": "mysql-client-5.7",
            "binary_version": "5.7.12-0ubuntu1"
          },
          {
            "binary_name": "mysql-client-core-5.7",
            "binary_version": "5.7.12-0ubuntu1"
          },
          {
            "binary_name": "mysql-common",
            "binary_version": "5.7.12-0ubuntu1"
          },
          {
            "binary_name": "mysql-server",
            "binary_version": "5.7.12-0ubuntu1"
          },
          {
            "binary_name": "mysql-server-5.7",
            "binary_version": "5.7.12-0ubuntu1"
          },
          {
            "binary_name": "mysql-server-core-5.7",
            "binary_version": "5.7.12-0ubuntu1"
          },
          {
            "binary_name": "mysql-source-5.7",
            "binary_version": "5.7.12-0ubuntu1"
          },
          {
            "binary_name": "mysql-testsuite",
            "binary_version": "5.7.12-0ubuntu1"
          },
          {
            "binary_name": "mysql-testsuite-5.7",
            "binary_version": "5.7.12-0ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "mysql-5.7",
        "purl": "pkg:deb/ubuntu/mysql-5.7@5.7.12-0ubuntu1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.7.12-0ubuntu1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.7.11-0ubuntu4",
        "5.7.11-0ubuntu5",
        "5.7.11-0ubuntu6"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "percona-xtradb-cluster-server",
            "binary_version": "5.6.34-26.19-0ubuntu0.16.04.1"
          },
          {
            "binary_name": "percona-xtradb-cluster-server-5.6",
            "binary_version": "5.6.34-26.19-0ubuntu0.16.04.1"
          },
          {
            "binary_name": "percona-xtradb-cluster-source-5.6",
            "binary_version": "5.6.34-26.19-0ubuntu0.16.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "percona-xtradb-cluster-5.6",
        "purl": "pkg:deb/ubuntu/percona-xtradb-cluster-5.6@5.6.34-26.19-0ubuntu0.16.04.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.6.34-26.19-0ubuntu0.16.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.6.21-25.8-0ubuntu2",
        "5.6.21-25.8-0ubuntu3",
        "5.6.21-25.8-0ubuntu3.1",
        "5.6.21-25.8-0ubuntu3.2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "percona-server-server",
            "binary_version": "5.6.22-rel71.0-0ubuntu4.1"
          },
          {
            "binary_name": "percona-server-server-5.6",
            "binary_version": "5.6.22-rel71.0-0ubuntu4.1"
          },
          {
            "binary_name": "percona-server-source-5.6",
            "binary_version": "5.6.22-rel71.0-0ubuntu4.1"
          },
          {
            "binary_name": "percona-server-test",
            "binary_version": "5.6.22-rel71.0-0ubuntu4.1"
          },
          {
            "binary_name": "percona-server-test-5.6",
            "binary_version": "5.6.22-rel71.0-0ubuntu4.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "percona-server-5.6",
        "purl": "pkg:deb/ubuntu/percona-server-5.6@5.6.22-rel71.0-0ubuntu4.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.6.22-rel71.0-0ubuntu2",
        "5.6.22-rel71.0-0ubuntu4",
        "5.6.22-rel71.0-0ubuntu4.1"
      ]
    }
  ],
  "aliases": [],
  "details": "The ssl_verify_server_cert function in sql-common/client.c in MariaDB before 5.5.47, 10.0.x before 10.0.23, and 10.1.x before 10.1.10; Oracle MySQL 5.5.48 and earlier, 5.6.29 and earlier, and 5.7.11 and earlier; and Percona Server do not properly verify that the server hostname matches a domain name in the subject\u0027s Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via a \"/CN=\" string in a field in a certificate, as demonstrated by \"/OU=/CN=bar.com/CN=foo.com.\"",
  "id": "UBUNTU-CVE-2016-2047",
  "modified": "2026-04-22T07:37:54Z",
  "published": "2016-01-27T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-2047"
    },
    {
      "type": "REPORT",
      "url": "https://mariadb.atlassian.net/browse/MDEV-9212"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/MariaDB/server/commit/f0d774d48416bb06063184380b684380ca005a41"
    },
    {
      "type": "REPORT",
      "url": "http://marc.info/?l=oss-security\u0026m=145379584107459\u0026w=2"
    },
    {
      "type": "REPORT",
      "url": "http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-2953-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-2954-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2016-2047"
    }
  ],
  "related": [
    "USN-2953-1",
    "USN-2954-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2016-2047"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.