The EPATHOBJ::pprFlattenRec function in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, and Windows Server 2012 does not properly initialize a pointer for the next object in a certain list, which allows local users to obtain write access to the PATHRECORD chain, and consequently gain privileges, by triggering excessive consumption of paged memory and then making many FlattenPath function calls, aka "Win32k Read AV Vulnerability."
References to Advisories, Solutions, and Tools
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US-CERT Vulnerability Note:
CERT
Name:
TA13-190A
Type:
US Government Resource
External Source:
MISC
Name:
http://twitter.com/taviso/statuses/309157606247768064
Type:
Exploit
External Source:
FULLDISC
Name:
20130517 exploitation ideas under memory pressure
External Source:
FULLDISC
Name:
20130517 Re: exploitation ideas under memory pressure
External Source:
MS
Name:
MS13-053
Type:
Patch; Vendor Advisory
External Source:
FULLDISC
Name:
20130603 Re: exploitation ideas under memory pressure
External Source:
MISC
Name:
http://www.computerworld.com/s/article/9239477
External Source:
MISC
Name:
http://twitter.com/taviso/statuses/335557286657400832
External Source:
OVAL
Name:
oval:org.mitre.oval:def:17360
External Source:
MISC
Name:
http://www.reddit.com/r/netsec/comments/1eqh66/0day_windows_kernel_epathobj_vulnerability/
External Source:
MISC
Name:
http://www.theverge.com/2013/5/23/4358400/google-engineer-bashes-microsoft-discloses-windows-flaw
External Source:
EXPLOIT-DB
Name:
25611
Type:
Exploit