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GNU Emacs Local Variable Processing Vulnerability
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Secunia Advisory:
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SA27508
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Release Date:
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2007-11-05
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Popularity:
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4,426 views
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Critical:
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Moderately critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Vendor Workaround
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| Software: | GNU Emacs 22.x
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| CVE reference: | CVE-2007-5795
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Description:
Drake Wilson has reported a vulnerability in GNU Emacs, which can be exploited by malicious people to compromise a user's system.
The vulnerability is caused due to an error in the "hack-local-variables" function where local variables within a file are processed in an insecure manner. This can be exploited to e.g. modify a user's user-init-file and execute arbitrary Emacs Lisp code when a specially crafted file is opened.
Successful exploitation requires that "enable-local-variables" is set to ":safe".
The vulnerability is reported in version 22.1. Other versions may also be affected.
Solution:
Fixed in the CVS repository.
http://cvs.savannah.gnu.org/viewvc/em...es.el?r1=1.896.2.28&r2=1.896.2.29
Provided and/or discovered by:
Drake Wilson
Original Advisory:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=449008
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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