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>> Libxml2 XML Data Processing Two Integer Overflow Vulnerabilities
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Title : Libxml2 XML Data Processing Two Integer Overflow Vulnerabilities
VUPEN ID : VUPEN/ADV-2008-3176
CVE ID : CVE-2008-4225 - CVE-2008-4226
CWE ID : CWE-189
Rated as : High Risk 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2008-11-19
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Two vulnerabilities have been identified in Libxml2, which could be exploited by attackers to cause a denial of service or compromise a vulnerable system.
The first issue is caused by an integer overflow error in the "xmlSAX2Characters()" function when processing an overly large XML file, which could cause a memory corruption potentially leading to arbitrary code execution.
The second vulnerability is caused by an integer overflow error in the "xmlBufferResize()" function when processing an overly large XML file, which could cause an infinite loop, leading to a denial of service condition.
Affected Products
Libxml2 versions 2.x
Solution
VUPEN Security is not aware of any vendor-supplied patch.
References
http://www.vupen.com/english/advisories/2008/3176
https://bugzilla.redhat.com/show_bug.cgi?id=470466
https://bugzilla.redhat.com/show_bug.cgi?id=470480
Credits
Vulnerabilities reported by Drew Yaro (Apple Product Security Team).
ChangeLog
2008-11-19 : Initial release
Vulnerability Management
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