{"id":"CVE-2019-20917","aliases":["DEBIAN-CVE-2019-20917","DLA-2375-1","DSA-4764-1","EUVD-2019-11450","GHSA-8h73-696h-wwm7","UBUNTU-CVE-2019-20917","USN-7405-1"],"status":"published","title":"An issue was discovered in InspIRCd 2 before 2.0.28 and 3 before 3.3.0. The mysql module contains...","description":"An issue was discovered in InspIRCd 2 before 2.0.28 and 3 before 3.3.0. The mysql module contains a NULL pointer dereference when built against mariadb-connector-c 3.0.5 or newer. When combined with the sqlauth or sqloper modules, this vulnerability can be used for remote crashing of an InspIRCd server by any user able to connect to a server.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02787,"percentile":0.86505,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-476"],"published":"2020-09-11T04:43:48Z","modified":"2026-10-20T13:43:00Z","fixes":[{"ecosystem":"Debian:12","package":"inspircd","fixed_in":["3.3.0-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"inspircd","fixed_in":["3.3.0-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"inspircd","fixed_in":["2.0.20-5ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"inspircd","fixed_in":["2.0.24-1ubuntu1+esm1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"inspircd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.0-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"inspircd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.0-1"}]}]},{"source":"osv","ecosystem":"Debian:9","package":"inspircd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.23-2+deb9u1"}]}],"versions":["2.0.23-2"],"bundled":2},{"source":"osv","ecosystem":"Debian:10","package":"inspircd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.27-1+deb10u1"}]}],"versions":["2.0.27-1"],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"inspircd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.20-5ubuntu0.1~esm1"}]}],"versions":["2.0.20-3","2.0.20-4","2.0.20-5","2.0.20-5build1","2.0.20-5build2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"inspircd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.24-1ubuntu1+esm1"}]}],"versions":["2.0.24-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"inspircd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.20-5ubuntu0.1~esm1"}]}],"versions":["2.0.20-3","2.0.20-4","2.0.20-5","2.0.20-5build1","2.0.20-5build2"],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"inspircd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.24-1ubuntu1+esm1"}]}],"versions":["2.0.24-1ubuntu1"],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"inspircd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.0-2ubuntu1+esm1"}]}],"versions":["2.0.27-1ubuntu2","3.4.0-2ubuntu1"],"bundled":3}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"inspircd","product":"inspircd"}],"references":[{"url":"https://docs.inspircd.org/security/2019-02/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory","report"]},{"url":"https://github.com/inspircd/inspircd/commit/2cc35d8625b7ea5cbd1d1ebb116aff86c5280162","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://github.com/inspircd/inspircd/commit/8745660fcdac7c1b80c94cfc0ff60928cd4dd4b7","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://www.debian.org/security/2020/dsa-4764","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2020/09/msg00015.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-20917"},{"url":"https://github.com/advisories/GHSA-8h73-696h-wwm7"},{"url":"https://security-tracker.debian.org/tracker/CVE-2019-20917","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2019-20917","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-20917","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-7405-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2016-7142","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2020-25269","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2019-20917","description":"An issue was discovered in InspIRCd 2 before 2.0.28 and 3 before 3.3.0. The mysql module contains a NULL pointer dereference when built against mariadb-connector-c 3.0.5 or newer. When combined with the sqlauth or sqloper modules, this vulnerability can be used for remote crashing of an InspIRCd server by any user able to connect to a server.","status":"published","published":"2020-09-11T04:43:48Z","modified":"2024-08-05T03:00:18.872Z","updated_at":"2026-11-02T14:20:17.11067Z"}],"euvd":[{"id":"EUVD-2019-11450","description":"An issue was discovered in InspIRCd 2 before 2.0.28 and 3 before 3.3.0. The mysql module contains a NULL pointer dereference when built against mariadb-connector-c 3.0.5 or newer. When combined with the sqlauth or sqloper modules, this vulnerability can be used for remote crashing of an InspIRCd server by any user able to connect to a server.","status":"published","published":"2020-09-11T04:43:48Z","modified":"2024-08-05T03:00:18Z","updated_at":"2026-11-03T02:40:20.270172Z"}],"ghsa":[{"id":"GHSA-8h73-696h-wwm7","title":"An issue was discovered in InspIRCd 2 before 2.0.28 and 3 before 3.3.0. The mysql module contains...","description":"An issue was discovered in InspIRCd 2 before 2.0.28 and 3 before 3.3.0. The mysql module contains a NULL pointer dereference when built against mariadb-connector-c 3.0.5 or newer. When combined with the sqlauth or sqloper modules, this vulnerability can be used for remote crashing of an InspIRCd server by any user able to connect to a server.","status":"published","published":"2022-05-24T17:27:53Z","modified":"2023-01-27T21:16:24Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:43:22.817498Z"}],"nvd":[{"id":"CVE-2019-20917","description":"An issue was discovered in InspIRCd 2 before 2.0.28 and 3 before 3.3.0. The mysql module contains a NULL pointer dereference when built against mariadb-connector-c 3.0.5 or newer. When combined with the sqlauth or sqloper modules, this vulnerability can be used for remote crashing of an InspIRCd server by any user able to connect to a server.","status":"published","published":"2020-09-11T05:15:12.48Z","modified":"2026-06-17T02:31:26.043Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:L/Au:S/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:05:47.558959Z"}],"osv":[{"id":"CVE-2019-20917","description":"An issue was discovered in InspIRCd 2 before 2.0.28 and 3 before 3.3.0. The mysql module contains a NULL pointer dereference when built against mariadb-connector-c 3.0.5 or newer. When combined with the sqlauth or sqloper modules, this vulnerability can be used for remote crashing of an InspIRCd server by any user able to connect to a server.","status":"published","published":"2020-09-11T05:15:12.48Z","modified":"2026-10-20T13:43:00.626459743Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:12.363788Z"},{"id":"DEBIAN-CVE-2019-20917","description":"An issue was discovered in InspIRCd 2 before 2.0.28 and 3 before 3.3.0. The mysql module contains a NULL pointer dereference when built against mariadb-connector-c 3.0.5 or newer. When combined with the sqlauth or sqloper modules, this vulnerability can be used for remote crashing of an InspIRCd server by any user able to connect to a server.","status":"published","published":"2020-09-11T05:15:12.48Z","modified":"2026-09-21T07:01:02.161958409Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:32.221385Z"},{"id":"UBUNTU-CVE-2019-20917","description":"An issue was discovered in InspIRCd 2 before 2.0.28 and 3 before 3.3.0. The mysql module contains a NULL pointer dereference when built against mariadb-connector-c 3.0.5 or newer. When combined with the sqlauth or sqloper modules, this vulnerability can be used for remote crashing of an InspIRCd server by any user able to connect to a server.","status":"published","published":"2020-09-11T05:15:00Z","modified":"2026-04-22T12:17:29.662918Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:21.213407Z"},{"id":"DLA-2375-1","title":"inspircd - security update","status":"published","published":"2020-09-19T00:00:00Z","modified":"2026-03-09T01:20:48.228732Z","updated_at":"2026-11-02T15:46:10.712745Z"},{"id":"DSA-4764-1","title":"inspircd - security update","status":"published","published":"2020-09-18T00:00:00Z","modified":"2026-03-09T02:11:02.650152Z","updated_at":"2026-11-02T15:46:17.19998Z"},{"id":"USN-7405-1","title":"inspircd vulnerabilities","description":"It was discovered that InspIRCd did not correctly handle certificate\nfingerprints, which could lead to spoofing. A remote attacker could\npossibly use this issue to bypass authentication. This issue only affected\nUbuntu 16.04 LTS. (CVE-2016-7142)\n\nIt was discovered that InspIRCd did not correctly handle certain memory\noperations, which could lead to a NULL pointer dereference. A remote\nattacker could possibly use this issue to cause a denial of service. This\nissue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.\n(CVE-2019-20917)\n\nIt was discovered that InspIRCd did not correctly handle certain memory\noperations, which could lead to a use-after-free. A remote attacker could\npossibly use this issue to cause a denial of service. (CVE-2020-25269)\n","status":"published","published":"2025-04-02T05:04:12Z","modified":"2026-06-25T13:32:30.279587496Z","updated_at":"2026-11-02T16:58:19.988474Z"}]}}