Vulnerability Details CVE-2009-3677
The Internet Authentication Service (IAS) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold and SP1, and Server 2008 Gold does not properly verify the credentials in an MS-CHAP v2 Protected Extensible Authentication Protocol (PEAP) authentication request, which allows remote attackers to access network resources via a malformed request, aka "MS-CHAP Authentication Bypass Vulnerability."
Exploit prediction scoring system (EPSS) score
EPSS Score 0.609
EPSS Ranking 98.2%
CVSS Severity
CVSS v2 Score 10.0
References
- http://www.securitytracker.com/id?1023291
- http://www.us-cert.gov/cas/techalerts/TA09-342A.html
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-071
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6209
- http://www.securitytracker.com/id?1023291
- http://www.us-cert.gov/cas/techalerts/TA09-342A.html
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-071
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6209
Products affected by CVE-2009-3677
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cpe:2.3:o:microsoft:windows_2000:-
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cpe:2.3:o:microsoft:windows_server_2003:-
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cpe:2.3:o:microsoft:windows_server_2003:r2
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cpe:2.3:o:microsoft:windows_server_2008:-
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cpe:2.3:o:microsoft:windows_server_2008:r2
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cpe:2.3:o:microsoft:windows_vista:-
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cpe:2.3:o:microsoft:windows_xp:-
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cpe:2.3:o:microsoft:windows_xp:unknown