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Secunia Security Advisory 37368

Secunia Security Advisory 37368
Posted Nov 17, 2009
Authored by Secunia | Site secunia.com

Secunia Security Advisory - A vulnerability has been discovered in avast! Home/Professional, which can be exploited by malicious, local users to cause a DoS (Denial of Service) or potentially gain escalated privileges.

tags | advisory, denial of service, local
SHA-256 | 8e2fc64c3bcbfc363fd360cdf5be920c323bd2096d2bbcb2308465b745da8bf0

Secunia Security Advisory 37368

Change Mirror Download
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Do you have VARM strategy implemented?

(Vulnerability Assessment Remediation Management)

If not, then implement it through the most reliable vulnerability
intelligence source on the market.

Implement it through Secunia.

For more information visit:
http://secunia.com/advisories/business_solutions/

Alternatively request a call from a Secunia representative today to
discuss how we can help you with our capabilities contact us at:
sales@secunia.com

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TITLE:
avast! Home/Professional aswRdr.sys Memory Corruption Vulnerability

SECUNIA ADVISORY ID:
SA37368

VERIFY ADVISORY:
http://secunia.com/advisories/37368/

DESCRIPTION:
A vulnerability has been discovered in avast! Home/Professional,
which can be exploited by malicious, local users to cause a DoS
(Denial of Service) or potentially gain escalated privileges.

The vulnerability is caused due to an error in aswRdr.sys when
processing IOCTLs. This can be exploited to corrupt kernel memory via
a specially crafted 0x80002024 IOCTL.

Successful exploitation may allow execution of arbitrary code with
SYSTEM privileges.

The vulnerability is confirmed in avast! Home version 4.8.1356. Other
versions may also be affected.

SOLUTION:
Restrict local access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Independently discovered by Giuseppe 'Evilcry' Bonfa' and AbdulAziz
Hariri.

ORIGINAL ADVISORY:
https://www.evilfingers.com/advisory/Advisory/Avast_aswRdr_sys_Kernel_Pool_Corruption_and_Local_Privilege_Escalation.php

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

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