CVE-2011-0661

Description

The SMB Server service in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly validate fields in SMB requests, which allows remote attackers to execute arbitrary code via a malformed request in a (1) SMBv1 or (2) SMBv2 packet, aka "SMB Transaction Parsing Vulnerability."

Category

10.0
CVSS
Severity: Critical
CVSS 2.0 •
EPSS 63.00% Top 5%
Vendor Advisory microsoft.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/44072 third party advisory
http://osvdb.org/71781 vdb entry
http://www.us-cert.gov/cas/techalerts/TA11-102A.html third party advisory us government resource
http://www.securitytracker.com/id?1025329 vdb entry
http://www.vupen.com/english/advisories/2011/0939 vdb entry
http://www.securityfocus.com/bid/47198 vdb entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12076 vdb entry signature
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-020 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2011-0661?
CVE-2011-0661 has been scored as a critical severity vulnerability.
How to fix CVE-2011-0661?
To fix CVE-2011-0661, 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-2011-0661 being actively exploited in the wild?
It is possible that CVE-2011-0661 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~63% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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