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."
References (4)
Core 4
Core References
Vendor Advisory vendor-advisory
x_refsource_ms
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-071
US Government Resource third-party-advisory
x_refsource_cert
http://www.us-cert.gov/cas/techalerts/TA09-342A.html
Third Party Advisory, VDB Entry vdb-entry
signature
x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6063
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id?1023291
Scores
EPSS
0.3161
EPSS Percentile
98.1%
Details
CWE
CWE-287
Status
published
Products (3)
microsoft/windows_server_2008
microsoft/windows_server_2008
sp2 x32 (2 CPE variants)
microsoft/windows_vista
Published
Dec 09, 2009
Tracked Since
Feb 18, 2026