CVE-2009-3560

N/A
Published: December 4, 2009 at 09:00 PM UTC
Updated: June 16, 2026 at 11:11 PM UTC
2 products affected across 2 vendorsHTTP ServerLibexpat· also runs on 1 platform

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Severity
N/A
Exploit prediction
EPSS 24%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

2.0.35 ≤ v < 2.0.642.2.0 ≤ v < 2.2.17
Affected range stops below 2.0.64, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.2.17, so it looks safe — our inference, not a vendor statement
xmltwig-xml-twig-for-perl (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

References (58)

CVSS

Confidentiality
NONE
Integrity
NONE
Availability
PARTIAL
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-119

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