CVE-2009-2505

The Internet Authentication Service (IAS) in Microsoft Windows Vista SP2 and Server 2008 SP2 does not properly validate MS-CHAP v2 Protected Extensible…

published December 9, 2009

CVSS
—
EPSS
32%
Percentile
98.3
In the wild
Unconfirmed
What it is

⚠️ A crafty flaw in Microsoft's Internet Authentication Service could leave systems vulnerable if not addressed! Imagine remote attackers executing code just by sending a sneaky request. 😱 Think of IAS like a receptionist at a secure building who doesn’t check the visitor’s ID properly. If anyone can just walk in with a forged badge, they could wreak havoc inside! An attacker could exploit this vulnerability to execute arbitrary code on the affected system, potentially gaining unauthorized access or compromising sensitive data. The consequences could be quite serious if this exploit were to be used maliciously!

Put simply

Think of IAS like a receptionist at a secure building who doesn’t check the visitor’s ID properly. If anyone can just walk in with a forged badge, they could wreak havoc inside! This vulnerability arises from improper validation of MS-CHAP v2 PEAP authentication requests in IAS, leading to potential memory corruption and exploitation via malformed requests.

What to do

An attacker could exploit this vulnerability to execute arbitrary code on the affected system, potentially gaining unauthorized access or compromising sensitive data. The consequences could be quite serious if this exploit were to be used maliciously! To remediate this issue, ensure that Windows Vista SP2 and Server 2008 SP2 are updated with the latest patches provided by Microsoft. Regularly review your authentication protocols and consider implementing stronger validation measures to enhance security. 🛡️ You're on the right track! By patching and enhancing your defenses, you can be a security hero! 💪🚀

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.31611 · 98.3th percentile
Published
2009-12-09T18:00Z
EPSS history
Timeline
  • 09 DEC 18:00Z
    The Internet Authentication Service (IAS) in Microsoft Windows Vista SP2 and Server 2008 SP2 does not properly validate MS-CHAP v2 Protected Extensible…
    cvelistv5