DSA-3828-1 dovecot -- dovecot
|ID: oval:org.secpod.oval:def:602847||Date: (C)2017-04-11 (M)2018-08-21|
|Class: PATCH||Family: unix|
It was discovered that the Dovecot email server is vulnerable to a denial of service attack. When the "dict" passdb and userdb are used for user authentication, the username sent by the IMAP/POP3 client is sent through var_expand to perform %variable expansion. Sending specially crafted %variable fields could result in excessive memory usage causing the process to crash .