Vulnerability CVE-2010-5151


Published: 2012-08-25

Description:
** DISPUTED ** Race condition in avast! Internet Security 5.0.462 on Windows XP allows local users to bypass kernel-mode hook handlers, and execute dangerous code that would otherwise be blocked by a handler but not blocked by signature-based malware detection, via certain user-space memory changes during hook-handler execution, aka an argument-switch attack or a KHOBE attack. NOTE: this issue is disputed by some third parties because it is a flaw in a protection mechanism for situations where a crafted program has already begun to execute.

Vendor: Avast!
Product: Avast! internet security 
Version: 5.0.462;

CVSS2 => (AV:L/AC:H/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.2/10
10/10
1.9/10
Exploit range
Attack complexity
Authentication
Local
High
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete

 References:
http://www.theregister.co.uk/2010/05/07/argument_switch_av_bypass/
http://www.securityfocus.com/bid/39924
http://www.osvdb.org/67660
http://www.f-secure.com/weblog/archives/00001949.html
http://matousec.com/info/articles/khobe-8.0-earthquake-for-windows-desktop-security-software.php
http://matousec.com/info/advisories/khobe-8.0-earthquake-for-windows-desktop-security-software.php
http://countermeasures.trendmicro.eu/you-just-cant-trust-a-drunk/
http://archives.neohapsis.com/archives/fulldisclosure/2010-05/0066.html
http://archives.neohapsis.com/archives/bugtraq/2010-05/0026.html

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