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avast! Home/Professional aavmker4.sys Privilege Escalation
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Secunia Advisory:
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SA29605
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Release Date:
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2008-03-31
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Last Update:
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2008-04-11
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Critical:
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Less critical
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Impact:
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Privilege escalation
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Where:
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Local system
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Solution Status:
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Vendor Patch
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| Software: | avast! Home/Professional 4.x
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| | CVE reference: | CVE-2008-1625 (Secunia mirror)
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Description:
Tobias Klein has reported a vulnerability in avast! Home/Professional, which can be exploited by malicious, local users to gain escalated privileges.
An input validation error within the 0xb2d60030 IOCTL handler of the aavmker4.sys driver can be exploited e.g. to overwrite arbitrary kernel memory via a specially crafted IOCTL request.
The vulnerability is reported in version 4.7. Other versions may also be affected.
Do you have this product installed on your home computer? Scan using the free Personal Software Inspector. Check if a vulnerable version is installed on computers in your corporate network, scan using the Network Software Inspector.
Solution:
Update to version 4.8.1169.
http://www.avast.com/eng/download.html
Provided and/or discovered by:
Tobias Klein
Changelog:
2008-04-11: Added CVE reference.
Original Advisory:
avast!:
http://www.avast.com/eng/avast-4-home_pro-revision-history.html
Tobias Klein:
http://www.trapkit.de/advisories/TKADV2008-002.txt
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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8. avast! Antivirus Device Driver Memory Overwrite Vulnerability
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