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TITLE:
Dovecot Malformed Header Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA32479

VERIFY ADVISORY:
http://secunia.com/advisories/32479/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
Dovecot 1.x
http://secunia.com/advisories/product/10191/

DESCRIPTION:
A vulnerability has been reported in Dovecot, which can be exploited
by malicious people to cause a DoS (Denial of Service).

An error exists when parsing certain mail headers. This can be
exploited to e.g. prevent a user from accessing the mailbox by
sending specially crafted emails to a vulnerable system.

Successful exploitation requires that the client uses the "FETCH
ENVELOPE" command.

SOLUTION:
Update to version 1.1.6.
http://www.dovecot.org/releases/1.1/dovecot-1.1.6.tar.gz

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://www.dovecot.org/list/dovecot-news/2008-October/000089.html

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