68515 : Dovecot plugins/acl/acl-backend-vfile.c ACL Permission Addition Specific Entry Order Mailbox Access Restriction Remote Bypass
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
5	795	over 2 years ago	over 1 year ago	4 times	100%

Timeline

Disclosure Date
2010-10-02

Description

Dovecot contains a flaw related to 'plugins/acl/acl-backend-vfile.c' interpreting a less specific ACL permissions entry of the same type as a previous more specific ACL entry as an addition rather than a replacement. This may allow a remote authenticated attacker to use a request to read or modify a mailbox to bypass intended access restrictions.

Classification

Location: Remote / Network Access
Attack Type: Input Manipulation
Impact: Loss of Integrity
Solution: Upgrade
Exploit: Exploit Unknown
Disclosure: Vendor Verified
OSVDB: Authentication Required

Solution

Upgrade to version 1.2.15, 2.0.5 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Timo Sirainen	Dovecot	2.0.4
		1.2.14

References

CVE ID: 2010-3707 (see also: NVD)
Secunia Advisory ID: 41723 42049 43220 44642 46363
VUPEN Advisory: ADV-2010-2572
Vendor Specific News/Changelog Entry: http://lists.opensuse.org/opensuse-security-announce/2010-11/msg00001.html
Mail List Post: http://marc.info/?l=oss-security&m=128620520732377&w=2
http://marc.info/?l=oss-security&m=128622064325688&w=2
http://seclists.org/fulldisclosure/2011/Oct/479
Vendor Specific Advisory URL: http://security.gentoo.org/glsa/glsa-201110-04.xml
https://lists.ubuntu.com/archives/ubuntu-security-announce/2011-February/001243.html
Other Advisory URL: http://www.dovecot.org/list/dovecot/2010-October/053450.html
http://www.dovecot.org/list/dovecot/2010-October/053451.html
http://www.dovecot.org/list/dovecot/2010-October/053452.html
RedHat RHSA: https://rhn.redhat.com/errata/RHSA-2011-0600.html

Credit

Not Available

CVSSv2 Score

CVSSv2 Base Score = 5.5
Source: nvd.nist.gov | Generated: 2010-10-07 | Disagree?

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