CVE-2009-2505 Memory corruption in n/a

Critical 10.0 Published 9 Dec 2009 Updated 7 Aug 2024

Remote attackers can execute arbitrary code on Windows Vista and Server 2008 by sending malformed MS-CHAP v2 PEAP authentication requests to the Internet Authentication Service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2009-2505?

CVE-2009-2505 is a critical memory corruption vulnerability in Microsoft Windows Server 2008, published on 9 Dec 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Internet Authentication Service (IAS) in Microsoft Windows Vista SP2 and Server 2008 SP2 does not properly validate MS-CHAP v2 Protected Extensible Authentication Protocol (PEAP) authentication requests, which allows remote attackers to execute arbitrary code via crafted structures in a malformed request, aka "Internet Authentication Service Memory Corruption Vulnerability."

Weakness: CWE-287

Which versions are affected by CVE-2009-2505?

It affects 2 products.

Products include Microsoft Windows Server 2008, Microsoft Windows Vista.

How do I fix CVE-2009-2505?

No fix has been published for CVE-2009-2505 yet. Limit exposure of the affected software until one is available.

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

Is CVE-2009-2505 being exploited?

There is no known exploitation of CVE-2009-2505 in the wild and no public exploit code.

All Microsoft Windows Server 2008 vulnerabilities

Sources

Also known as GHSA-3vqg-cv53-whw6.