USN-3258-2: Dovecot regression
11 April 2017
USN-3258-1 introduced a regression in Dovecot.
- dovecot - IMAP and POP3 email server
USN-3258-1 intended to fix a vulnerability in Dovecot. Further investigation
revealed that only Dovecot versions 2.2.26 and newer were affected by the
vulnerability. Additionally, the change introduced a regression when Dovecot
was configured to use the "dict" authentication database. This update reverts
the change. We apologize for the inconvenience.
Original advisory details:
It was discovered that Dovecot incorrectly handled some usernames. An attacker
could possibly use this issue to cause Dovecot to hang or crash, resulting in a
denial of service.
- USN-3258-1: dovecot-core, dovecot-mysql, dovecot-sqlite, dovecot-imapd, dovecot-pgsql, dovecot-pop3d, dovecot-managesieved, dovecot-lucene, dovecot, dovecot-solr, dovecot-gssapi, mail-stack-delivery, dovecot-dev, dovecot-ldap, dovecot-sieve, dovecot-lmtpd