60797 : Expat libexpat lib/xmltok.c big2_toUtf8 Function UTF-8 XML Document Handling Overflow DoS
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Disclosure Date


Expat contains a flaw in the handling of XML documents that may allow a remote denial of service. The issue is due to the 'big2_toUtf8()' function in lib/xmltok.c not validating user-supplied input. With a specially crafted XML file containing malformed UTF-8 sequences, a context-dependent attacker can cause the service to crash.


Location: Context Dependent
Impact: Loss of Availability
Solution: Third-Party Solution
Exploit: Exploit Unknown
Disclosure: Third-party Verified
OSVDB: Web Related


Multiple vendors have released an upgrade to address this vulnerability. Check the vendor advisory, changelog, or solution in the references section for details.




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CVSSv2 Score

CVSSv2 Base Score = 5.0
Source: nvd.nist.gov | Generated: 2009-12-07 | Disagree?

Access_vector_2 Access_complexity_2 Authentication_2 Confidentiality_impact_0 Integrity_impact_0 Availability_impact_1


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