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TITLE:
Dovecot ACL Plugin "i" Right APPEND and COPY Weakness

SECUNIA ADVISORY ID:
SA26320

VERIFY ADVISORY:
http://secunia.com/advisories/26320/

CRITICAL:
Not critical

IMPACT:
Security Bypass

WHERE:
>From remote

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

DESCRIPTION:
A weakness has been reported in Dovecot, which can be exploited by
malicious users to bypass certain security restrictions.

The weakness is caused due to an error within the handling of the "i"
(insert) right in the ACL plugin, which can be exploited to save
certain other flags (e.g. seen or deleted) via the APPEND or COPY
commands without having the proper permissions.

The weakness is reported in versions prior to 1.0.3. Other versions
may be also affected.

SOLUTION:
Update to version 1.0.3.

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

ORIGINAL ADVISORY:
http://www.dovecot.org/list/dovecot-news/2007-August/000048.html

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About:
This Advisory was delivered by Secunia as a free service to help
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