CVE-2009-2505

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."

Category

10.0
CVSS
Severity: Critical
CVSS 2.0 •
EPSS 47.85% Top 5%
Vendor Advisory microsoft.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-071 vendor advisory
http://www.us-cert.gov/cas/techalerts/TA09-342A.html third party advisory us government resource
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6063 vdb entry signature
http://www.securitytracker.com/id?1023291 vdb entry

Frequently Asked Questions

What is the severity of CVE-2009-2505?
CVE-2009-2505 has been scored as a critical severity vulnerability.
How to fix CVE-2009-2505?
To fix CVE-2009-2505, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-2505 being actively exploited in the wild?
It is possible that CVE-2009-2505 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~48% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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