Dovecot: Authentication-bypass, DoS, Disclosure Vulnerabilities

Users of Dovecot please be advised of an Authentication-bypass, DoS, Disclosure vulnerabilities that has been identified.
To view this vulnerability, possible remedies, and others please check out the Security Advisories at Critical Watch (

MDVSA-2010:217: [MDVSA-2010:217] Dovecot Authentication-bypass, DoS, Disclosure
Problem Description:

Multiple vulnerabilities was discovered and corrected in dovecot:

Dovecot 1.2.x before 1.2.15 and 2.0.x before 2.0.beta2 grants the admin
permission to the owner of each mailbox in a non-public namespace,
which might allow remote authenticated users to bypass intended access
restrictions by changing the ACL of a mailbox, as demonstrated by a
symlinked shared mailbox (CVE-2010-3779).

Dovecot 1.2.x before 1.2.15 allows remote authenticated users to
cause a denial of service (master process outage) by simultaneously
disconnecting many (1) IMAP or (2) POP3 sessions (CVE-2010-3780).Read more at