{"id":"CVE-2017-3305","aliases":["DLA-916-1","DSA-3834-1","EUVD-2017-12426","GHSA-7568-gxg7-r8h9","RHSA-2017:2787","SUSE-SU-2017:1137-1","UBUNTU-CVE-2017-3305","USN-3269-1"],"status":"published","title":"Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: C API)....","description":"Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: C API). Supported versions that are affected are 5.5.55 and earlier and 5.6.35 and earlier. Difficult to exploit vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Server accessible data. CVSS 3.0 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N). NOTE: the previous information is from the April 2017 CPU. Oracle has not commented on third-party claims that this issue allows man-in-the-middle attackers to hijack the authentication of users by leveraging incorrect ordering of security parameter verification in a client, aka, \"The Riddle\".","severity":{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01361,"percentile":0.71931,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-319"],"published":"2017-04-24T00:00:00Z","modified":"2026-10-24T10:30:25Z","fixes":[{"ecosystem":"Ubuntu:14.04:LTS","package":"mysql-5.5","fixed_in":["5.5.55-0ubuntu0.14.04.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:7","package":"mysql-5.5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.5.55-0+deb7u1"}]}],"versions":["5.5.30+dfsg-1.1","5.5.31+dfsg-0+wheezy1","5.5.31+dfsg-1","5.5.33+dfsg-0+wheezy1","5.5.33+dfsg-1","5.5.35+dfsg-0+wheezy1","5.5.35+dfsg-1","5.5.35+dfsg-2","5.5.37-0+wheezy1","5.5.37-1","5.5.38-0+wheezy1","5.5.39-1","5.5.40-0+wheezy1","5.5.40-1","5.5.41-0+wheezy1","5.5.42-1","5.5.43-0+deb7u1","5.5.44-0+deb7u1","5.5.46-0+deb7u1","5.5.47-0+deb7u1","5.5.49-0+deb7u1","5.5.50-0+deb7u1","5.5.50-0+deb7u2","5.5.52-0+deb7u1","5.5.53-0+deb7u1","5.5.54-0+deb7u1","5.5.54-0+deb7u2"],"bundled":12},{"source":"osv","ecosystem":"Debian:8","package":"mysql-5.5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.5.55-0+deb8u1"}]}],"versions":["5.5.42-1","5.5.43-0+deb8u1","5.5.44-0+deb8u1","5.5.46-0+deb8u1","5.5.47-0+deb8u1","5.5.49-0+deb8u1","5.5.50-0+deb8u1","5.5.52-0+deb8u1","5.5.53-0+deb8u1","5.5.54-0+deb8u1"],"bundled":12},{"source":"osv","ecosystem":"Red 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Supported versions that are affected are 5.5.55 and earlier and 5.6.35 and earlier. Difficult to exploit vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Server accessible data. CVSS 3.0 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N). NOTE: the previous information is from the April 2017 CPU. Oracle has not commented on third-party claims that this issue allows man-in-the-middle attackers to hijack the authentication of users by leveraging incorrect ordering of security parameter verification in a client, aka, \"The Riddle\".","status":"published","published":"2017-04-24T19:00:00Z","modified":"2024-10-07T16:22:26.025Z","updated_at":"2026-11-02T14:33:15.887816Z"}],"euvd":[{"id":"EUVD-2017-12426","description":"Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: C API). Supported versions that are affected are 5.5.55 and earlier and 5.6.35 and earlier. Difficult to exploit vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Server accessible data. CVSS 3.0 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N). NOTE: the previous information is from the April 2017 CPU. Oracle has not commented on third-party claims that this issue allows man-in-the-middle attackers to hijack the authentication of users by leveraging incorrect ordering of security parameter verification in a client, aka, \"The Riddle\".","status":"published","published":"2017-04-24T19:00:00Z","modified":"2024-10-07T16:22:26Z","updated_at":"2026-11-03T00:27:46.330731Z"}],"ghsa":[{"id":"GHSA-7568-gxg7-r8h9","title":"Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: C API)....","description":"Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: C API). Supported versions that are affected are 5.5.55 and earlier and 5.6.35 and earlier. Difficult to exploit vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Server accessible data. CVSS 3.0 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N). NOTE: the previous information is from the April 2017 CPU. Oracle has not commented on third-party claims that this issue allows man-in-the-middle attackers to hijack the authentication of users by leveraging incorrect ordering of security parameter verification in a client, aka, \"The Riddle\".","status":"published","published":"2022-05-13T01:45:07Z","modified":"2025-04-20T03:37:40Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-319"],"updated_at":"2026-11-02T15:01:45.195531Z"}],"nvd":[{"id":"CVE-2017-3305","description":"Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: C API). 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Oracle has not commented on third-party claims that this issue allows man-in-the-middle attackers to hijack the authentication of users by leveraging incorrect ordering of security parameter verification in a client, aka, \"The Riddle\".","status":"published","published":"2017-04-24T19:59:00.8Z","modified":"2026-06-17T01:17:58.67Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":6.3,"vector":"AV:N/AC:M/Au:S/C:C/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-319"],"updated_at":"2026-11-02T14:03:46.08744Z"}],"osv":[{"id":"CVE-2017-3305","description":"Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: C API). Supported versions that are affected are 5.5.55 and earlier and 5.6.35 and earlier. Difficult to exploit vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Server accessible data. CVSS 3.0 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N). NOTE: the previous information is from the April 2017 CPU. Oracle has not commented on third-party claims that this issue allows man-in-the-middle attackers to hijack the authentication of users by leveraging incorrect ordering of security parameter verification in a client, aka, \"The Riddle\".","status":"published","published":"2017-04-24T19:59:00.8Z","modified":"2026-10-24T10:30:25.825768073Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:06.029968Z"},{"id":"RHSA-2017:2787","title":"Red Hat Security Advisory: rh-mysql56-mysql security and bug fix update","status":"published","published":"2024-09-13T14:41:09Z","modified":"2026-06-29T10:17:52Z","cvss":[{"version":"3.0","score":7.7,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:04.262457Z"},{"id":"UBUNTU-CVE-2017-3305","description":"Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: C API). Supported versions that are affected are 5.5.55 and earlier and 5.6.35 and earlier. Difficult to exploit vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Server accessible data. CVSS 3.0 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N). NOTE: the previous information is from the April 2017 CPU. Oracle has not commented on third-party claims that this issue allows man-in-the-middle attackers to hijack the authentication of users by leveraging incorrect ordering of security parameter verification in a client, aka, \"The Riddle\".","status":"published","published":"2017-04-24T00:00:00Z","modified":"2026-04-22T11:23:42.324368Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:14.977781Z"},{"id":"DLA-916-1","title":"mysql-5.5 - security update","status":"published","published":"2017-04-25T00:00:00Z","modified":"2026-03-09T02:09:07.270764Z","updated_at":"2026-11-02T15:46:13.584509Z"},{"id":"DSA-3834-1","title":"mysql-5.5 - security update","status":"published","published":"2017-04-25T00:00:00Z","modified":"2026-03-09T01:19:48.192896Z","updated_at":"2026-11-02T15:46:16.523846Z"},{"id":"SUSE-SU-2017:1137-1","title":"Security update for mysql","description":"\nThis update for mysql to version 5.5.55 fixes the following issues:\n\nThese security issues were fixed:\n\n- CVE-2017-3308: Unspecified vulnerability in Server: DML (bsc#1034850)\n- CVE-2017-3309: Unspecified vulnerability in Server: Optimizer (bsc#1034850)\n- CVE-2017-3329: Unspecified vulnerability in Server: Thread (bsc#1034850)\n- CVE-2017-3600: Unspecified vulnerability in Client: mysqldump (bsc#1034850)\n- CVE-2017-3453: Unspecified vulnerability in Server: Optimizer (bsc#1034850)\n- CVE-2017-3456: Unspecified vulnerability in Server: DML (bsc#1034850)\n- CVE-2017-3463: Unspecified vulnerability in Server: Security (bsc#1034850)\n- CVE-2017-3462: Unspecified vulnerability in Server: Security (bsc#1034850)\n- CVE-2017-3461: Unspecified vulnerability in Server: Security (bsc#1034850)\n- CVE-2017-3464: Unspecified vulnerability in Server: DDL (bsc#1034850)\n- CVE-2017-3305: MySQL client sent authentication request unencrypted even if SSL was required (aka Ridddle) (bsc#1029396).\n- CVE-2016-5483: Mysqldump failed to properly quote certain identifiers in SQL statements written to the dump output, allowing for execution of arbitrary commands (bsc#1029014)\n- '--ssl-mode=REQUIRED' can be specified to require a secure connection (it fails if a secure connection cannot be obtained)\n\nThis non-security issue was fixed:\n\n- Set the default umask to 077 in rc.mysql-multi [bsc#1020976]\n\nFor additional changes please see\nhttp://dev.mysql.com/doc/relnotes/mysql/5.5/en/news-5-5-55.html\n\nNote: The issue tracked in bsc#1022428 and fixed in the last update was\nassigned CVE-2017-3302.\n","status":"published","published":"2017-04-28T15:34:16Z","modified":"2026-02-04T03:16:48.40987Z","updated_at":"2026-11-02T15:53:43.83457Z"},{"id":"USN-3269-1","title":"mysql-5.5, mysql-5.7 vulnerabilities","description":"Multiple security issues were discovered in MySQL and this update includes\nnew upstream MySQL versions to fix these issues.\n\nMySQL has been updated to 5.5.55 in Ubuntu 14.04 LTS. Ubuntu 16.04 LTS,\nUbuntu 16.10 and Ubuntu 17.04 have been updated to MySQL 5.7.18.\n\nIn addition to security fixes, the updated packages contain bug fixes,\nnew features, and possibly incompatible changes.\n\nPlease see the following for more information:\nhttp://dev.mysql.com/doc/relnotes/mysql/5.5/en/news-5-5-55.html\nhttp://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-18.html\nhttp://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.html\n","status":"published","published":"2017-04-27T14:06:50Z","modified":"2026-04-27T15:14:26.332953Z","updated_at":"2026-11-02T16:58:10.303275Z"}]}}