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avast! Antivirus "aavmker4.sys" Memory Corruption Vulnerability

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Release Date:  2010-02-23    Last Update:  2010-03-04    Views:  5,660

Secunia Advisory SA38677

Where:

Local system

Impact:

Privilege escalation, DoS

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Tobias Klein has reported a vulnerability in avast!, which can be exploited by malicious, local users to cause a DoS (Denial of Service) or gain escalated privileges.

The vulnerability is caused due to an error in the "aavmker4.sys" kernel driver when processing certain IOCTLs. This can be exploited to corrupt kernel memory via a specially crafted 0xb2d60030 IOCTL.

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

The vulnerability is reported in versions prior to 5.0.418.


Solution:
Update to version 5.0.418.

Provided and/or discovered by:
Tobias Klein

Original Advisory:
Tobias Klein:
http://trapkit.de/advisories/TKADV2010-003.txt

avast:
http://forum.avast.com/index.php?topic=55484.0

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: avast! Antivirus "aavmker4.sys" Memory Corruption Vulnerability

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