Vulnerability CVE-2009-3522
Published: 2009-10-01   Modified: 2012-02-13

Description:
Stack-based buffer overflow in aswMon2.sys in avast! Home and Professional for Windows 4.8.1351, and possibly other versions before 4.8.1356, allows local users to cause a denial of service (system crash) and possibly gain privileges via a crafted IOCTL request to IOCTL 0xb2c80018.

See advisories in our WLB2 database:
Topic
Author
Date
High
Avast aswMon2.sys kernel memory corruption and Local Privilege Escalation
Evilcry
04.10.2009

Type:

CWE-119

 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.2/10
10/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Avast -> Avast antivirus home 
Avast -> Avast antivirus professional 

 References:
http://www.avast.com/eng/avast-4-home_pro-revision-history.html
http://www.securityfocus.com/archive/1/506681/100/0/threaded
http://www.securityfocus.com/bid/36507
http://www.securitytracker.com/id?1022940
http://www.vupen.com/english/advisories/2009/2761
https://exchange.xforce.ibmcloud.com/vulnerabilities/53456
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6226
https://www.evilfingers.com/advisory/Advisory/Avast_aswMon2.sys_kernel_memory_corruption_and_Local_Privilege_Escalation.php
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