A flaw was found in mbsync versions prior to 1.4.4. Due to inadequate handling of extremely large (>=2GiB) IMAP literals, malicious or compromised IMAP servers, and hypothetically even external email senders, could cause several different buffer overflows, which could conceivably be exploited for remote code execution.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2028932 | third party advisory issue tracking |
| https://www.openwall.com/lists/oss-security/2021/12/03/1 | third party advisory mailing list |
| https://lists.debian.org/debian-lts-announce/2022/07/msg00001.html | third party advisory mailing list |
| https://security.gentoo.org/glsa/202208-15 | third party advisory vendor advisory |