{"id":"CVE-2023-21840","aliases":["CLSA-2023-1675372579","EUVD-2023-26006","GHSA-jcp3-6qf5-qwcc","UBUNTU-CVE-2023-21840","USN-5823-1","USN-5823-2"],"status":"published","title":"Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: PS).  Supported...","description":"Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: PS).  Supported versions that are affected are 5.7.40 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server.  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts).  CVSS Vector: 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Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-21840","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-jcp3-6qf5-qwcc"},{"url":"https://errata.cloudlinux.com/ubuntu16-els/CLSA-2023-1675372579","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/21xxx/CVE-2023-21840.json","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-21840","tags":["report"]},{"url":"https://www.oracle.com/security-alerts/cpujan2023.html#AppendixMSQL","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-5823-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/notices/USN-5823-2","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-21840","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2022-32221","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-21836","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-21863","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-21867","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-21868","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-21869","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-21870","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-21871","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-21873","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-21875","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-21876","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-21877","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-21878","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-21879","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-21880","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-21881","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-21882","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-21883","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-21887","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-21840","description":"Vulnerability 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Supported versions that are affected are 5.7.40 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server.  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).","status":"published","published":"2023-01-17T23:35:10.085Z","modified":"2024-09-17T14:15:54.534Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:35:20.368244Z"}],"euvd":[{"id":"EUVD-2023-26006","description":"Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: PS).  Supported versions that are affected are 5.7.40 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server.  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).","status":"published","published":"2023-01-17T23:35:10Z","modified":"2024-09-17T14:15:54Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T00:28:21.906955Z"}],"ghsa":[{"id":"GHSA-jcp3-6qf5-qwcc","title":"Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: PS).  Supported...","description":"Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: PS).  Supported versions that are affected are 5.7.40 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server.  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).","status":"published","published":"2023-01-18T00:30:17Z","modified":"2023-02-02T05:03:43Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T14:51:42.325662Z"}],"nvd":[{"id":"CVE-2023-21840","description":"Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: PS).  Supported versions that are affected are 5.7.40 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server.  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).","status":"published","published":"2023-01-18T00:15:13.517Z","modified":"2026-06-17T05:34:09.713Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"updated_at":"2026-11-02T14:07:45.305824Z"}],"osv":[{"id":"CVE-2023-21840","description":"Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: PS).  Supported versions that are affected are 5.7.40 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server.  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).","status":"published","published":"2023-01-17T23:35:10.085Z","modified":"2026-10-28T02:30:48.950109168Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:30.334753Z"},{"id":"UBUNTU-CVE-2023-21840","description":"Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: PS).  Supported versions that are affected are 5.7.40 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).","status":"published","published":"2023-01-18T00:15:00Z","modified":"2026-04-22T13:26:45.855792Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:54:18.756095Z"},{"id":"CLSA-2023-1675372579","title":"Fix CVE(s): CVE-2023-21840","description":"\n   * SECURITY UPDATE: Update to 5.7.41 to fix security issues\n     - CVE-2023-21840","status":"published","published":"2023-02-02T21:16:19Z","modified":"2026-06-04T10:04:05.196908Z","updated_at":"2026-11-02T15:43:40.176048Z"},{"id":"USN-5823-1","title":"mysql-5.7, mysql-8.0 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 8.0.32 in Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and\nUbuntu 22.10. Ubuntu 18.04 LTS has been updated to MySQL 5.7.41.\n\nIn addition to security fixes, the updated packages contain bug fixes, new\nfeatures, and possibly incompatible changes.\n\nPlease see the following for more information:\n\nhttps://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-41.html\nhttps://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-32.html\nhttps://www.oracle.com/security-alerts/cpujan2023.html\n","status":"published","published":"2023-01-24T18:20:27Z","modified":"2026-04-27T16:32:21.031157098Z","updated_at":"2026-11-02T16:58:16.738762Z"},{"id":"USN-5823-2","title":"mysql-5.7 vulnerability","description":"USN-5823-1 fixed a vulnerability in MySQL. This update provides\nthe corresponding update for Ubuntu 16.04 ESM.\n\nOriginal advisory details:\n\n Multiple security issues were discovered in MySQL and this update includes\n new upstream MySQL versions to fix these issues.\n\n MySQL has been updated to MySQL 5.7.41.\n\n In addition to security fixes, the updated packages contain bug fixes, new\n features, and possibly incompatible changes.\n\n Please see the following for more information:\n\n https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-41.html\n https://www.oracle.com/security-alerts/cpujan2023.html\n","status":"published","published":"2023-01-24T22:34:14Z","modified":"2026-06-25T13:31:43.264369154Z","updated_at":"2026-11-02T16:58:16.738762Z"}]}}