Vulnerability Description
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."
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 2000 | All versions |
| Microsoft | Windows Server 2003 | All versions |
| Microsoft | Windows Server 2008 | All versions |
| Microsoft | Windows Vista | All versions |
| Microsoft | Windows Xp | All versions |
Related Weaknesses (CWE)
References
- http://www.securitytracker.com/id?1023291
- http://www.us-cert.gov/cas/techalerts/TA09-342A.htmlUS Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-07
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3
- http://www.securitytracker.com/id?1023291
- http://www.us-cert.gov/cas/techalerts/TA09-342A.htmlUS Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-07
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3
FAQ
What is CVE-2009-3677?
CVE-2009-3677 is a vulnerability with a CVSS score of 10.0 (HIGH). 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-CHA...
How severe is CVE-2009-3677?
CVE-2009-3677 has been rated HIGH with a CVSS base score of 10.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2009-3677?
Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 2000, Microsoft Windows Server 2003, Microsoft Windows Server 2008, Microsoft Windows Vista, Microsoft Windows Xp.