Rule

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Sid
24067

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Summary:
This event is generated when an attempt is made to exploit a known vulnerability in expat.

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Impact:
Denial of Service. Information disclosure. Loss of integrity. 

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Detailed Information:
The updatePosition function in lib/xmltok_impl.c in libexpat in Expat 2.0.1, as used in Python, PyXML, w3c-libwww, and other software, allows context-dependent attackers to cause a denial of service (application crash) via an XML document with crafted UTF-8 sequences that trigger a buffer over-read, a different vulnerability than CVE-2009-2625.

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Affected Systems:
james clark expat 2.0.1

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Attack Scenarios:


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Ease of Attack:
Medium.

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False Positives:
None known.

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False Negatives:
None known.

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Corrective Action:
Upgrade to the latest non-affected version of the software.

Apply the appropriate vendor supplied patches.

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Contributors:
Sourcefire Vulnerability Research Team
This document was generated from data supplied by the National Vulnerability Database. A product of the National Institute of Standards and Technology.
For more information see http://nvd.nist.gov/

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Additional References:

NIST CVE-2009-3720:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2009-3720
  
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