Bug 878025 (CVE-2012-5534)

Summary:	CVE-2012-5534 weechat (scripts / plug-ins): Arbitrary code execution due to call of shell when executing command within hook_process
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	i, karlthered, niveusluna, peter.borsa
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	WeeChat 0.3.9.2	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-11-27 10:43:25 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:	878026, 878027
Bug Blocks:

Description Jan Lieskovsky 2012-11-19 13:36:00 UTC

A security flaw was found in the way WeeChat (Wee Enhanced Environment for Chat), a portable, fast, light and extensible IRC client, performed command execution in hook_process, when a plug-in or script provided an untrusted input to WeeChat hook. A remote attacker could use this flaw to cause arbitrary code execution with the privileges of the user running the WeeChat client plug-in.

Upstream bug report:
[1] https://savannah.nongnu.org/bugs/?37764

Relevant patch:
[2] http://git.savannah.gnu.org/gitweb/?p=weechat.git;a=commitdiff_plain;h=efb795c74fe954b9544074aafcebb1be4452b03a

CVE request:
[3] http://www.openwall.com/lists/oss-security/2012/11/19/2

References:
[4] http://www.weechat.org/security/
[5] http://www.weechat.org/files/changelog/ChangeLog-0.3.9.2.html

Comment 1 Jan Lieskovsky 2012-11-19 13:38:19 UTC

This issue affects the versions of the weechat package, as shipped with Fedora release of 16 and 17. Please schedule an update.

--

This issue affects the version of the weechat package, as shipped with Fedora EPEL 6. Please schedule an update.

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This issue did NOT affect the version of the weechat package, as shipped with Fedora EPEL 5 as it did not include the vulnerable source code part / functionality (yet).

Comment 2 Jan Lieskovsky 2012-11-19 13:39:49 UTC

Created weechat tracking bugs for this issue

Affects: fedora-all [bug 878026]
Affects: epel-6 [bug 878027]

Comment 3 Jan Lieskovsky 2012-11-19 17:41:02 UTC

The CVE identifier of CVE-2012-5534 has been assigned to this issue:
http://www.openwall.com/lists/oss-security/2012/11/19/4

Comment 4 Fedora Update System 2012-11-27 05:11:23 UTC

weechat-0.3.8-4.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 5 Jan Lieskovsky 2012-11-27 10:43:25 UTC

Updates for all products, this issue had affected previously, has been submitted already. Closing this bug.

Comment 6 Fedora Update System 2012-11-29 03:58:23 UTC

weechat-0.3.8-4.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 Fedora Update System 2012-11-29 06:09:31 UTC

weechat-0.3.8-4.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 8 Fedora Update System 2012-11-29 06:18:35 UTC

weechat-0.3.8-4.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.