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Category:   Application (Generic)  >   Emacs Vendors:   GNU [multiple authors]
GNU Emacs 'enable-local-variables' Safe Setting Can Be Bypassed Leading to Command Execution
SecurityTracker Alert ID:  1027375
SecurityTracker URL:  http://securitytracker.com/id/1027375
CVE Reference:   CVE-2012-3479   (Links to External Site)
Date:  Aug 13 2012
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 23.2, 23.3, 23.4, and 24.1
Description:   A vulnerability was reported in GNU Emacs. A remote user can cause arbitrary commands to be executed on the target user's system.

When the Emacs user option 'enable-local-variables' is set to ':safe', the software incorrectly evaluates 'eval' forms. A remote user can create a specially crafted file that, when loaded by the target user, will execute arbitrary Emacs Lisp code with the privileges of the target user.

Paul Ling reported this vulnerability.

Impact:   A remote user can create a file that, when loaded by the target user, will execute arbitrary commands on the target user's system.
Solution:   The vendor has issued patches.

The vendor's advisory is available at:

http://debbugs.gnu.org/cgi/bugreport.cgi?bug=12155

Vendor URL:  www.gnu.org/software/emacs/emacs.html (Links to External Site)
Cause:   Input validation error
Underlying OS:   Linux (Any)

Message History:   None.


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