Bug 709097 (CVE-2011-2167)

Summary:	CVE-2011-2167 dovecot: directory traversal due to not obeying chroot directive
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	kvolny, mhlavink
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-02-22 04:12:17 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	709108, 885557
Bug Blocks:	712345, 855229

Description Vincent Danen 2011-05-30 15:22:41 UTC

Common Vulnerabilities and Exposures assigned an identifier CVE-2011-2167 to
the following vulnerability:

Name: CVE-2011-2167
URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2167
Assigned: 20110524
Reference: http://dovecot.org/pipermail/dovecot/2011-May/059085.html
Reference: http://openwall.com/lists/oss-security/2011/05/18/4
Reference: http://www.dovecot.org/doc/NEWS-2.0

script-login in Dovecot 2.0.x before 2.0.13 does not follow the chroot
configuration setting, which might allow remote authenticated users to
conduct directory traversal attacks by leveraging a script.

Comment 1 Vincent Danen 2011-05-30 16:23:13 UTC

Created dovecot tracking bugs for this issue

Affects: fedora-all [bug 709108]

Comment 2 Huzaifa S. Sidhpurwala 2011-08-05 04:55:08 UTC

Looking at the upstream NEWS file, i dont see this bug/issue being seperately mentioned.
Also looking at the timeline it seems the following patch is the only one which would fit the bill, not sure if its applicable though:

http://hg.dovecot.org/dovecot-2.0/diff/a2d57b43ccb2/src/util/script-login.c

Comment 3 Huzaifa S. Sidhpurwala 2011-08-05 04:56:21 UTC

Michal,

Can you please take a look at this issue?

Comment 7 Michal Hlavinka 2011-08-08 14:38:09 UTC

(In reply to comment #3)
> Michal,
> 
> Can you please take a look at this issue?

this and CVE-2011-2166 have the same fix from comment #2, but this fix causes some regressions. Upstream knows about this and promised to fix it for next version. That fix is not available atm.

Comment 8 Huzaifa S. Sidhpurwala 2011-08-09 03:13:04 UTC

(In reply to comment #7)
> (In reply to comment #3)
> > Michal,
> > 
> > Can you please take a look at this issue?
> 
> this and CVE-2011-2166 have the same fix from comment #2, but this fix causes
> some regressions. Upstream knows about this and promised to fix it for next
> version. That fix is not available atm.

Ok, upstream just confirmed this. I was under the impression that Timo just mentioned CVE-2011-2166.

Comment 9 Huzaifa S. Sidhpurwala 2011-08-09 03:13:15 UTC

Upstream has confirmed that this particular fix, will break current
configurations for the dovecot server, which will only be fixed in 2.0.14

Reference:
http://www.mail-archive.com/dovecot@dovecot.org/msg38350.html

Comment 10 Huzaifa S. Sidhpurwala 2011-09-01 05:22:48 UTC

Dovecot 2.0.14 is released:
http://dovecot.org/list/dovecot-news/2011-August/000193.html

The following in the Changelog suggests that comment #4 has been addressed:

script-login attempted an unnecessary config lookup, which usually
failed with "Permission denied"

Comment 13 errata-xmlrpc 2013-02-21 10:35:28 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:0520 https://rhn.redhat.com/errata/RHSA-2013-0520.html

Comment 14 Huzaifa S. Sidhpurwala 2013-02-22 04:23:48 UTC

Statement:

(none)