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Dovecot LDAP Auth Cache Security Bypass

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Release Date:  2008-01-02    Last Update:  2008-01-04    Views:  10,085

Secunia Advisory SA28271

Where:

From remote

Impact:

Security Bypass

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


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

The security issue is caused due to an error within the LDAP authentication functionality when auth cache is enabled. This can be exploited by a malicious user to log in with the same cached "pass_attrs" of another user (e.g. gain access to the other user's mailbox), which is logged in "auth_cache_ttl" seconds before the malicious user.

Successful exploitation requires non-default configuration settings and that the two users share the same "password" and "pass_filter" variables. Please see the vendor advisory for further details.

The security issue is reported in versions 1.0.rc11 through 1.0.9.


Solution:
Update to version 1.0.10.

Provided and/or discovered by:
Reported by the vendor.

Original Advisory:
http://www.dovecot.org/list/dovecot-news/2007-December/000057.html

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Dovecot LDAP Auth Cache Security Bypass

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