CVE-2020-24386 log

Severity High
Remote Yes
Type Information disclosure
A security issue was discovered in dovecot version 2.2.26 up to When imap hibernation is active, an attacker can cause dovecot to discover the file system directory structure and access other users' emails using a specially crafted command. The attacker must have valid credentials to access the mail server. The issue is fixed in dovecot version 2.3.13.
Group Package Affected Fixed Severity Status Ticket
AVG-1398 dovecot 2.3.13-1 High Fixed
Date Advisory Group Package Severity Type
04 Jan 2021 ASA-202101-4 AVG-1398 dovecot High multiple issues

Operators can choose to disable IMAP hibernation. IMAP hibernation is not on by default. To ensure imap hibernation is disabled, make sure imap_hibernate_timeout is set to 0 or unset.