In the IMAP Server in Dovecot 2.3.3 through 2.3.5.2, the submission-login service crashes when the client disconnects prematurely during the AUTH command.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Dovecot | Dovecot | 2.3.3 (including) | 2.3.5.2 (including) |
| Dovecot | Ubuntu | cosmic | * |
| Dovecot | Ubuntu | devel | * |
| Dovecot | Ubuntu | disco | * |
| Dovecot | Ubuntu | upstream | * |