{"id":"CVE-2021-44143","details":"A flaw was found in mbsync in isync 1.4.0 through 1.4.3. Due to an unchecked condition, a malicious or compromised IMAP server could use a crafted mail message that lacks headers (i.e., one that starts with an empty line) to provoke a heap overflow, which could conceivably be exploited for remote code execution.","modified":"2026-03-15T22:42:18.575956Z","published":"2021-11-22T20:15:18.223Z","related":["openSUSE-SU-2024:11779-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CYZ2GNB4ZO2T27D2XNUWMCS3THZYSJQU/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LCBSY7OZ57XNC6ZYXF6WU5KBSWITZVDX/"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202208-15"},{"type":"ADVISORY","url":"https://sourceforge.net/p/isync/isync/ref/master/tags/"},{"type":"ADVISORY","url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=999804"},{"type":"FIX","url":"https://sourceforge.net/p/isync/isync/commit_browser"},{"type":"ARTICLE","url":"http://www.openwall.com/lists/oss-security/2021/12/03/2"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-44143.json","unresolved_ranges":[{"events":[{"introduced":"1.4.0"},{"last_affected":"1.4.3"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]},{"events":[{"introduced":"0"},{"last_affected":"11.0"}]},{"events":[{"introduced":"0"},{"last_affected":"34"}]},{"events":[{"introduced":"0"},{"last_affected":"35"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}