CVE-2009-3560 Memory corruption in n/a

What is CVE-2009-3560?

CVE-2009-3560 is a medium-severity memory corruption vulnerability in Apache Http Server, published on 4 Dec 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-119

Which versions are affected by CVE-2009-3560?

It affects 2 products.

Products include Apache Http Server, Libexpat Project Libexpat.

How do I fix CVE-2009-3560?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2009-3560 being exploited?

There is no known exploitation of CVE-2009-3560 in the wild and no public exploit code.

Other vulnerabilities in Apache Http Server

• CVE-2021-42013 Apache HTTP Server Path Traversal Exploited Critical 9.8
• CVE-2024-38475 Apache HTTP Server Improper Escaping of Output Exploited Critical 9.1
• CVE-2021-40438 Apache HTTP Server-Side Request Forgery (SSRF) Exploited Critical 9.0
• CVE-2019-0211 Apache HTTP Server Privilege Escalation Exploited High 7.8
• CVE-2021-41773 Apache HTTP Server Path Traversal Exploited High 7.5

All Apache Http Server vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-43780, AZL-44736, DEBIAN-CVE-2009-3560, DSA-1953-1, DSA-1953-2, GHSA-pcgv-8c5g-4m8p and 1 more.