avast! 4 Home and Professional aavmker4.sys driver privilege escalation
| avast-aavmker4-privilege-escalation (41527) |  High Risk |
Description:
avast! 4 Home and Professional could allow a local attacker to gain elevated privileges on the system, caused by an error in the aavmker4.sys driver. By sending a specially-crafted IOCTL request, an attacker could exploit this vulnerability to overwrite system memory and execute arbitrary code on the system with kernel level privileges.
*CVSS:
| Base Score: | 7.2 |
| Access Vector: | Local |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 6 |
| Exploitability: | Functional |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Privileges
Remedy:
Upgrade to the latest version of avast! 4 Home or avast! 4 Professional (4.8.1169 or later), available from the avast! Web site. See References.
References:
- avast! Changelog, Version 4.8.1169, March 29, 2008: avast! 4 Home/Professional Revision History.
- avast! Web site: Download Programs.
- Offensive Security Exploit Database [04-27-2010]: Avast! 4.7 aavmker4.sys privilege escalation .
- Trapkit Security Advisory TKADV2008-002: avast! 4.7 aavmker4.sys Kernel Memory Corruption .
- BID-28502: Avast! Home/Professional Local Privilege Escalation Vulnerability
- CVE-2008-1625: aavmker4.sys in avast! Home and Professional 4.7 for Windows does not properly validate input to IOCTL 0xb2d60030, which allows local users to gain privileges via certain IOCTL requests.
- SA29605: avast! Home/Professional aavmker4.sys Privilege Escalation
- SECTRACK ID: 1019732: avast! 'aavmker4.sys' Kernel Driver Lets Local Users Gain Elevated Privileges
- VUPEN/ADV-2008-1034: avast! Home/Professional aavmker4.sys Privilege Escalation Issue
Platforms Affected:
- Alwil avast! 4.7 Professional
- Alwil avast! 4.7 Home
Reported:
Mar 30, 2008
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.