Test ID:	1.3.6.1.4.1.25623.1.0.900985
Category:	Buffer overflow
Title:	avast! 'aswRdr.sys' Buffer Overflow Vulnerability
Summary:	avast! AntiVirus is prone to a buffer overflow vulnerability.
Description:	Summary: avast! AntiVirus is prone to a buffer overflow vulnerability. Vulnerability Insight: The vulnerability is due to an error in 'aswRdr.sys' when processing IOCTLs. This can be exploited to corrupt kernel memory via a specially crafted 0x80002024 IOCTL. Vulnerability Impact: Successful exploitation could allow remote attackers to cause a Denial of Service or potentially gain escalated privileges. Affected Software/OS: avast! Home and Professional version 4.8.1356 and prior on Windows. Solution: Upgrade to avast! Home and Professional version 4.8.1367 or later. CVSS Score: 7.2 CVSS Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2009-4049 BugTraq ID: 37031 http://www.securityfocus.com/bid/37031 Bugtraq: 20091114 Avast aswRdr.sys Kernel Pool Corruption and Local Privilege Escalation (Google Search) http://www.securityfocus.com/archive/1/507891/100/0/threaded http://www.efblog.net/2009/11/avast-aswrdrsys-kernel-pool-corruption.html https://www.evilfingers.com/advisory/Advisory/Avast_aswRdr_sys_Kernel_Pool_Corruption_and_Local_Privilege_Escalation.php http://secunia.com/advisories/37368 http://www.vupen.com/english/advisories/2009/3266
Copyright	Copyright (C) 2009 Greenbone AG

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