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>> GNU Emacs Local Variable Processing Security Bypass Vulnerability

Title : GNU Emacs Local Variable Processing Security Bypass Vulnerability
VUPEN ID : VUPEN/ADV-2007-3715
CVE ID : CVE-2007-5795
Rated as : Moderate Risk 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2007-11-05


Technical Description    Receive VUPEN Security alerts in a Text format  Receive VUPEN Security alerts in a PDF format  Receive VUPEN Security alerts in an XML format 

A vulnerability has been identified in GNU Emacs, which could be exploited by attackers to bypass security restrictions. This issue is caused by an error in the "hack-local-variables" function that does not properly validate local variables read from a file, which could be exploited by attackers to execute arbitrary Emacs Lisp code by tricking a user into opening a malicious file using an application with the "enable-local-variables" option set to ":safe".

Affected Products

GNU Emacs version 22.1 and prior

Solution

A fix is available via CVS :
http://cvs.savannah.gnu.org/viewvc/emacs/emacs/lisp/files.el?r1=1.896.2.28&r2=1.896.2.29

References

http://www.vupen.com/english/advisories/2007/3715
http://bugs.debian.org/449008

Credits

Vulnerability reported by Drake Wilson.

ChangeLog

2007-11-05 : Initial release

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