CVE-2009-0550

Description

Windows HTTP Services (aka WinHTTP) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008; and WinINet in Microsoft Internet Explorer 5.01 SP4, 6 SP1, 6 and 7 on Windows XP SP2 and SP3, 6 and 7 on Windows Server 2003 SP1 and SP2, 7 on Windows Vista Gold and SP1, and 7 on Windows Server 2008; allows remote web servers to capture and replay NTLM credentials, and execute arbitrary code, via vectors related to absence of a "credential-reflection protections" opt-in step, aka "Windows HTTP Services Credential Reflection Vulnerability" and "WinINet Credential Reflection Vulnerability."

9.3

CVSS

Severity: Critical

CVSS 2.0 •

EPSS 34.82% Top 5%

Vendor Advisory microsoft.com Vendor Advisory microsoft.com

Affected: n/a n/a

References

Link	Tags
http://www.vupen.com/english/advisories/2009/1028	vdb entry
http://osvdb.org/53619	vdb entry
http://secunia.com/advisories/34677	third party advisory
http://www.us-cert.gov/cas/techalerts/TA09-104A.html	third party advisory us government resource
http://www.securitytracker.com/id?1022041	vdb entry
http://secunia.com/advisories/34678	third party advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6233	vdb entry signature
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7569	vdb entry signature
http://blogs.technet.com/srd/archive/2009/04/14/ntlm-credential-reflection-updates-for-http-clients.aspx
http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=871138
http://www.securityfocus.com/bid/34439	vdb entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-014	vendor advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5320	vdb entry signature
http://www.vupen.com/english/advisories/2009/1027	vdb entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-013	vendor advisory
http://support.avaya.com/elmodocs2/security/ASA-2009-133.htm

Frequently Asked Questions

What is the severity of CVE-2009-0550?: CVE-2009-0550 has been scored as a critical severity vulnerability.
How to fix CVE-2009-0550?: To fix CVE-2009-0550, 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-2009-0550 being actively exploited in the wild?: It is possible that CVE-2009-0550 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~35% probability that this vulnerability will be exploited by malicious actors in the next 30 days.