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CVE-2009-3560

UnknownEPSS 24.31%

Last modified

CVE-2009-3560 is a vulnerability of currently unknown severity. The big2_toUtf8 function in lib/xmltok.c in libexpat in Expat 2.0.1, as used in the XML-Twig module for Perl, allows context-dependent attackers to cause a denial of service (application crash) via an XML document with malformed UTF-8 sequences that trigger a buffer over-read, related to the doProlog function in lib/xmlparse.c, a different vulnerability than CVE-2009-2625 and CVE-2009-3720.. EPSS estimates a 24.31% chance of exploitation in the next 30 days.

Description

The big2_toUtf8 function in lib/xmltok.c in libexpat in Expat 2.0.1, as used in the XML-Twig module for Perl, allows context-dependent attackers to cause a denial of service (application crash) via an XML document with malformed UTF-8 sequences that trigger a buffer over-read, related to the doProlog function in lib/xmlparse.c, a different vulnerability than CVE-2009-2625 and CVE-2009-3720.

Metrics

EPSS Probability
24.31%

97.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Libexpat ProjectLibexpat2.0.1
ApacheHttp Server>= 2.0.35, < 2.0.64
ApacheHttp Server>= 2.2.0, < 2.2.17

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2009-3560?
The big2_toUtf8 function in lib/xmltok.c in libexpat in Expat 2.0.1, as used in the XML-Twig module for Perl, allows context-dependent attackers to cause a denial of service (application crash) via an XML document with malformed UTF-8 sequences that trigger a buffer over-read, related to the doProlog function in lib/xmlparse.c, a different vulnerability than CVE-2009-2625 and CVE-2009-3720.
How severe is CVE-2009-3560?
Severity scoring for CVE-2009-3560 is pending analysis. The EPSS model estimates a 24.31% probability of exploitation in the next 30 days.
How do I fix CVE-2009-3560?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST