Bug 847698 (CVE-2012-3479)

Summary: CVE-2012-3479 emacs: Evaluation of 'eval' forms in file-local variable sections, when 'enable-local-variables' set to ':safe'
Product: [Other] Security Response Reporter: Jan Lieskovsky <jlieskov>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: jonathan.underwood, rvokal
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: 2013-04-04 23:16:39 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: 847702    
Bug Blocks: 847705    
Attachments:
Description Flags
Provided (from [2]) upstream patch for v23.4 version
none
Provided (from [2]) upstream patch for v24.1 version none

Description Jan Lieskovsky 2012-08-13 09:54:52 UTC 
A security flaw was found in the file-variables code of emacs, a GNU Emacs text editor. When the Emacs user option 'enable-local-variables' was set to ':safe' (default is t), Emacs failed to refuse to evaluate 'eval' forms in file-local variable sections. A remote attacker could provide a specially-crafted file, that when processed by the Emacs Lisp plug-in would lead to arbitrary Lisp code execution with the privileges of the user running the Emacs editor, if the victim has had the 'enable-local-variables' option set to ':safe'.

Upstream bug:
[1] http://debbugs.gnu.org/cgi/bugreport.cgi?bug=12155

References:
[2] http://www.openwall.com/lists/oss-security/2012/08/13/1
[3] http://www.openwall.com/lists/oss-security/2012/08/13/2
Comment 1 Jan Lieskovsky 2012-08-13 09:56:45 UTC 
Created attachment 603940 [details]
Provided (from [2]) upstream patch for v23.4 version
Comment 2 Jan Lieskovsky 2012-08-13 09:57:32 UTC 
Created attachment 603943 [details]
Provided (from [2]) upstream patch for v24.1 version
Comment 3 Jan Lieskovsky 2012-08-13 09:58:20 UTC 
This issue affects the versions of the emacs package, as shipped with Fedora release of 16 and 17. Please schedule an update.
Comment 4 Jan Lieskovsky 2012-08-13 09:59:19 UTC 
Created emacs tracking bugs for this issue

Affects: fedora-all [bug 847702]
Comment 6 Fedora Update System 2012-08-22 20:58:01 UTC 
emacs-23.3-10.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 2012-08-22 21:08:40 UTC 
emacs-24.1-4.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 11 Stefan Cornelius 2012-08-29 09:36:31 UTC 
Statement:

Not vulnerable. This issue did not affect the versions of emacs as shipped with Red Hat Enterprise Linux 5 and 6.