{"id":"CVE-2019-20917","details":"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.","modified":"2026-04-11T09:39:56.811028Z","published":"2020-09-11T05:15:12.480Z","references":[{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/09/msg00015.html"},{"type":"ADVISORY","url":"https://www.debian.org/security/2020/dsa-4764"},{"type":"ADVISORY","url":"https://docs.inspircd.org/security/2019-02/"},{"type":"FIX","url":"https://github.com/inspircd/inspircd/commit/2cc35d8625b7ea5cbd1d1ebb116aff86c5280162"},{"type":"FIX","url":"https://github.com/inspircd/inspircd/commit/8745660fcdac7c1b80c94cfc0ff60928cd4dd4b7"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/inspircd/inspircd","events":[{"introduced":"9f24bef18e28654a07b30ba284663ce73e0a8125"},{"fixed":"79b163958a9cc1edd6c7d55907a1b571a43323c4"},{"introduced":"68e5d0a151d8b5ca6577a0053dcda95774bf323a"},{"fixed":"400de0ab0040b26aa413d47c7f680abe2ec2458b"},{"fixed":"2cc35d8625b7ea5cbd1d1ebb116aff86c5280162"},{"fixed":"8745660fcdac7c1b80c94cfc0ff60928cd4dd4b7"}],"database_specific":{"versions":[{"introduced":"2.0"},{"fixed":"2.0.28"},{"introduced":"3.0"},{"fixed":"3.3.0"}]}}],"versions":["v2.0.0","v2.0.0a1","v2.0.0a2","v2.0.0b1","v2.0.0b2","v2.0.0b3","v2.0.0b4","v2.0.0rc1","v2.0.0rc2","v2.0.1","v2.0.10","v2.0.11","v2.0.12","v2.0.13","v2.0.14","v2.0.15","v2.0.16","v2.0.17","v2.0.18","v2.0.19","v2.0.2","v2.0.20","v2.0.21","v2.0.22","v2.0.23","v2.0.24","v2.0.25","v2.0.26","v2.0.27","v2.0.3","v2.0.4","v2.0.5","v2.0.6rc1","v2.0.7","v2.0.8","v2.0.9","v2.0fork","v3.0.0","v3.0.1","v3.1.0","v3.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20917.json","vanir_signatures":[{"deprecated":false,"target":{"file":"src/modules/extra/m_mysql.cpp","function":"ModuleSQL::~ModuleSQL"},"source":"https://github.com/inspircd/inspircd/commit/8745660fcdac7c1b80c94cfc0ff60928cd4dd4b7","digest":{"length":238,"function_hash":"241887545301284665495179932616300993356"},"signature_type":"Function","id":"CVE-2019-20917-1e1c4755","signature_version":"v1"},{"deprecated":false,"target":{"file":"src/modules/extra/m_mysql.cpp","function":"ModuleSQL::~ModuleSQL"},"source":"https://github.com/inspircd/inspircd/commit/2cc35d8625b7ea5cbd1d1ebb116aff86c5280162","digest":{"length":238,"function_hash":"241887545301284665495179932616300993356"},"signature_type":"Function","id":"CVE-2019-20917-25917557","signature_version":"v1"},{"deprecated":false,"target":{"file":"src/modules/extra/m_mysql.cpp"},"source":"https://github.com/inspircd/inspircd/commit/2cc35d8625b7ea5cbd1d1ebb116aff86c5280162","digest":{"line_hashes":["97131708961733032428775120291510823109","269799031876934484607055524437757444453","255549233016784195165188629816694547467","144166504417220758686599965642966819446","44525923303389181099518146082718386630","76484964166473602630262888947165542367","141540635961572812486623944601260203415","331205328941029024140957971184915955583","214421680455201009319560976007864853937","139901357027587971418495392094662248022","270585790749019080528851035707420653930","318249702073141289905245127577035652065"],"threshold":0.9},"signature_type":"Line","id":"CVE-2019-20917-4142751b","signature_version":"v1"},{"deprecated":false,"target":{"file":"src/modules/extra/m_mysql.cpp","function":"ModuleSQL::init"},"source":"https://github.com/inspircd/inspircd/commit/2cc35d8625b7ea5cbd1d1ebb116aff86c5280162","digest":{"length":278,"function_hash":"5609707757580415519646402921099061555"},"signature_type":"Function","id":"CVE-2019-20917-58d7187f","signature_version":"v1"},{"deprecated":false,"target":{"file":"src/modules/extra/m_mysql.cpp","function":"ModuleSQL::init"},"source":"https://github.com/inspircd/inspircd/commit/8745660fcdac7c1b80c94cfc0ff60928cd4dd4b7","digest":{"length":116,"function_hash":"13771301119563863276343567754590794382"},"signature_type":"Function","id":"CVE-2019-20917-6b56d343","signature_version":"v1"},{"deprecated":false,"target":{"file":"src/modules/extra/m_mysql.cpp"},"source":"https://github.com/inspircd/inspircd/commit/8745660fcdac7c1b80c94cfc0ff60928cd4dd4b7","digest":{"line_hashes":["97131708961733032428775120291510823109","269799031876934484607055524437757444453","231346747847626587751603029082493586596","131723549370569820395430375609088513083","44525923303389181099518146082718386630","76484964166473602630262888947165542367","141540635961572812486623944601260203415","331205328941029024140957971184915955583","214421680455201009319560976007864853937","139901357027587971418495392094662248022","329679358540076502780177285939824173153","208189528832989032401935639903410301095"],"threshold":0.9},"signature_type":"Line","id":"CVE-2019-20917-9274ec66","signature_version":"v1"}],"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]}],"vanir_signatures_modified":"2026-04-11T09:39:56Z"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}