In GNOME Balsa before 2.6.0, a malicious server operator or man in the middle can trigger a NULL pointer dereference and client crash by sending a PREAUTH response to imapmboxconnect in libbalsa/imap/imap-handle.c.
{ "binaries": [ { "binary_name": "balsa", "binary_version": "2.4.12-2" } ] }
{ "binaries": [ { "binary_name": "balsa", "binary_version": "2.5.3-4" } ] }