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Category:   Application (Generic)  >   expat Vendors:   libexpat.org
(Sun Issues Fix) expat Buffer Over-read in big2_toUtf8() Lets Users Deny Service
SecurityTracker Alert ID:  1023280
SecurityTracker URL:  http://securitytracker.com/id/1023280
CVE Reference:   CVE-2009-3560   (Links to External Site)
Date:  Dec 4 2009
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.0.1
Description:   A vulnerability was reported in expat. A remote user can cause denial of service conditions.

A remote user can create an XML document containing specially crafted UTF-8 sequences that, when processed using libexpat, will trigger a buffer over-read in the big2_toUtf8() function and crash the target application.

The vulnerability resides in 'lib/xmltok.c'.

Impact:   A remote user can cause the target application to crash.
Solution:   Sun has issued a fix.

SPARC Platform

* OpenSolaris based upon builds snv_130 or later

x86 Platform

* OpenSolaris based upon builds snv_130 or later

Sun is working on a fix for Solaris 10.

The Sun advisory is available at:

http://sunsolve.sun.com/search/document.do?assetkey=1-66-273630-1

Vendor URL:  www.libexpat.org/ (Links to External Site)
Cause:   Access control error
Underlying OS:  UNIX (Solaris - SunOS)
Underlying OS Comments:  10, OpenSolaris

Message History:   This archive entry is a follow-up to the message listed below.
Dec 4 2009 expat Buffer Over-read in big2_toUtf8() Lets Users Deny Service



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