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Category:   Application (Generic)  >   libxslt Vendors:   Gnome Development Team
libxslt XSL Parsing Flaws Let Remote Users Deny Service
SecurityTracker Alert ID:  1028338
SecurityTracker URL:  http://securitytracker.com/id/1028338
CVE Reference:   CVE-2012-6139   (Links to External Site)
Date:  Mar 25 2013
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 1.1.28
Description:   A vulnerability was reported in libxslt. A remote user can cause denial of service conditions.

A remote user can send an XSL template with an empty 'match' attribute to trigger a crash in the xsltDocumentFunction() function in 'libxslt/functions.c'.

A remote user can send specially crafted XSL keys to trigger a null pointer dereference in the xsltAddKey() function in 'libxslt/keys.c'.

Impact:   A remote user can cause libxslt to crash.
Solution:   The vendor has issued a fix (1.1.28).

The source code fixes are also available at:

http://git.gnome.org/browse/libxslt/commit/?id=dc11b6b379a882418093ecc8adf11f6166682e8d
http://git.gnome.org/browse/libxslt/commit/?id=6c99c519d97e5fcbec7a9537d190efb442e4e833

Vendor URL:  xmlsoft.org/XSLT/ (Links to External Site)
Cause:   Access control error, Input validation error
Underlying OS:   Linux (Any), UNIX (Any)

Message History:   None.


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