CVE-2009-4049: Buffer Overflow
First published: Mon Nov 23 2009(Updated: )
Heap-based buffer overflow in aswRdr.sys (aka the TDI RDR driver) in avast! Home and Professional 4.8.1356.0 allows local users to cause a denial of service (memory corruption) or possibly gain privileges via crafted arguments to IOCTL 0x80002024.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Avast Pro Antivirus | =4.8.1356.0 | |
| Avast Antivirus | =4.8.1356.0 |
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Reference Links
- http://secunia.com/advisories/37368
- http://www.efblog.net/2009/11/avast-aswrdrsys-kernel-pool-corruption.html
- https://www.evilfingers.com/advisory/Advisory/Avast_aswRdr_sys_Kernel_Pool_Corruption_and_Local_Privilege_Escalation.php
- http://www.securityfocus.com/bid/37031
- http://www.vupen.com/english/advisories/2009/3266
- http://www.securityfocus.com/archive/1/507891/100/0/threaded
Frequently Asked Questions
What is the severity of CVE-2009-4049?
CVE-2009-4049 has a medium severity rating due to its potential for denial of service and local privilege escalation.
How do I fix CVE-2009-4049?
To fix CVE-2009-4049, update to a version of Avast that is later than 4.8.1356.0 that addresses this vulnerability.
What software is affected by CVE-2009-4049?
CVE-2009-4049 affects Avast! Home and Professional versions specifically at 4.8.1356.0.
What type of vulnerability is CVE-2009-4049?
CVE-2009-4049 is a heap-based buffer overflow vulnerability that can lead to memory corruption.
Can CVE-2009-4049 be exploited remotely?
CVE-2009-4049 requires local access to the system to exploit, as it involves crafted arguments to a local IOCTL.
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