Description
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."
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Microsoft Windows Vista/2008 - NtUserCheckAccessForIntegrityLevel Use-After-Free EDB-14156 · dos · Jul 1, 2010 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- oval:org.mitre.oval:def:12215 vdb-entry signature
- 20100630 MSRC-001: Windows Vista/Server 2008 NtUserCheckAccessForIntegrityLevel Use-after-free Vulnerability mailing-list
- 14156 exploit
- 41280 vdb-entry
- 40421 third-party-advisory
- TA10-285A third-party-advisory
- 66003 vdb-entry
- ms-win-ntusercheck-priv-escalation(60120) vdb-entry