{"id":"CVE-2021-43518","details":"Teeworlds up to and including 0.7.5 is vulnerable to Buffer Overflow. A map parser does not validate m_Channels value coming from a map file, leading to a buffer overflow. A malicious server may offer a specially crafted map that will overwrite client's stack causing denial of service or code execution.","modified":"2026-07-08T06:03:37.664518409Z","published":"2021-12-15T15:15:10.857Z","database_specific":{"unresolved_ranges":[{"extracted_events":[{"introduced":"35"},{"last_affected":"35"},{"introduced":"36"},{"last_affected":"36"}],"source":"CPE_STRING","vendor_product":"fedoraproject:fedora","cpes":["cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*","cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*"]}]},"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JIYZ7EVY6NZBM7FQF6GVUARYO6MKSEAT/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OS2LI2RHQNUKUT3FKWYHRC27PLRWCHMZ/"},{"type":"REPORT","url":"https://github.com/teeworlds/teeworlds/issues/2981"},{"type":"EVIDENCE","url":"https://mmmds.pl/fuzzing-map-parser-part-1-teeworlds/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/teeworlds/teeworlds","events":[{"introduced":"0"},{"last_affected":"4fc25a17fef3e6c2bf4d52b0421e0d69ecaa1e79"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"0.7.5"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:teeworlds:teeworlds:*:*:*:*:*:*:*:*"}}],"versions":["0.7.5","0.7.4","0.7.3.1","0.7.3","0.7.2","0.7.0","0.6-endofline","0.7-start","0.6.1-release","0.6.0-release","0.6-start","0.5-endofline"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-43518.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}