National Cyber Awareness System

Vulnerability Summary for CVE-2010-2549

Overview

Use-after-free vulnerability in the kernel-mode drivers in Microsoft Windows Vista SP1 and SP2 and Server 2008 Gold and SP2 allows local users to gain privileges or cause a denial of service (system crash) by using a large number of calls to the NtUserCheckAccessForIntegrityLevel function to trigger a failure in the LockProcessByClientId function, leading to deletion of an in-use process object, aka "Win32k Reference Count Vulnerability."

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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US-CERT Technical Alert: TA10-285A

Name: TA10-285A

Hyperlink:http://www.us-cert.gov/cas/techalerts/TA10-285A.html

External Source: XF

Name: ms-win-ntusercheck-priv-escalation(60120)

Hyperlink:http://xforce.iss.net/xforce/xfdb/60120

External Source: BID

Name: 41280

Hyperlink:http://www.securityfocus.com/bid/41280

External Source: EXPLOIT-DB

Name: 14156

Hyperlink:http://www.exploit-db.com/exploits/14156

External Source: SECUNIA

Name: 40421

Type: Advisory

Hyperlink:http://secunia.com/advisories/40421

External Source: FULLDISC

Name: 20100630 MSRC-001: Windows Vista/Server 2008 NtUserCheckAccessForIntegrityLevel Use-after-free Vulnerability

Hyperlink:http://seclists.org/fulldisclosure/2010/Jul/3

External Source: OVAL

Name: oval:org.mitre.oval:def:12215

Hyperlink:http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:12215

External Source: OSVDB

Name: 66003

Hyperlink:http://osvdb.org/66003

References to Check Content

Identifier:oval:org.mitre.oval:def:12215

Check System:http://oval.mitre.org/XMLSchema/oval-definitions-5

Hyperlink:http://oval.mitre.org/repository/data/DownloadDefinition?id=oval:org.mitre.oval:def:12215