A null dereference vulnerability has been found in the MIME handling component of LibEtPan before 1.8, as used in MailCore and MailCore 2. A crash can occur in low-level/imf/mailimf.c during a failed parse of a Cc header containing multiple e-mail addresses.
https://github.com/dinhviethoa/libetpan/releases/tag/1.8
https://github.com/dinhviethoa/libetpan/issues/274
https://github.com/dinhviethoa/libetpan/commit/1fe8fbc032ccda1db9af66d93016b49c16c1f22d