Secunia Security Advisory - A vulnerability has been reported in Dovecot, which can be exploited by malicious people to cause a DoS (Denial of Service).
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TITLE:
Dovecot Mailbox Large Header Denial of Service
SECUNIA ADVISORY ID:
SA38881
VERIFY ADVISORY:
https://secunia.com/advisories/38881/
DESCRIPTION:
A vulnerability has been reported in Dovecot, which can be exploited
by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to an error when processing certain
large headers, which can be exploited to cause a high CPU load by
sending a specially crafted email to the system.
Successful exploitation requires that the "mbox" mail directory
format is used.
The vulnerability is reported in versions prior to 1.2.11 of the
1.2.x branch. The 1.0.x and 1.1.x branches are not affected.
SOLUTION:
Update to version 1.2.11.
PROVIDED AND/OR DISCOVERED BY:
Stan Hoeppner and Kostik
ORIGINAL ADVISORY:
https://www.dovecot.org/list/dovecot-news/2010-March/000152.html
https://dovecot.org/pipermail/dovecot/2010-February/047190.html
https://dovecot.org/pipermail/dovecot/2010-February/047058.html
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