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CVE-2009-3522

7.2 · HIGH

Stack-based buffer overflow in aswMon2.sys in avast!

Published Oct 1, 2009avastCWE-119EPSS 0.95%

Overview

CVE-2009-3522 is a high-severity vulnerability affecting avast avast_antivirus_home. It was published on October 1, 2009 and has a CVSS 2.0 base score of 7.2 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.2, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from avast. Update avast_antivirus_home to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refosvdb.org/58402Refsecunia.com/advisories/36858Refwww.avast.com/eng/avast-4-home_pro-revision-history.htmlRefwww.securityfocus.com/archive/1/506681/100/0/threadedRefwww.securityfocus.com/bid/36507Refwww.securitytracker.com/id?1022940Refwww.vupen.com/english/advisories/2009/2761Refexchange.xforce.ibmcloud.com/vulnerabilities/53456Refoval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6226Refwww.evilfingers.com/advisory/Advisory/Avast_aswMon2.sys_kernel_memory_corruption_and_Local_Privilege_Escalation.php

How CyberStrike helps

Frequently asked questions

What is CVE-2009-3522?

CVE-2009-3522 is a high-severity vulnerability affecting avast avast_antivirus_home. It was published on October 1, 2009 and has a CVSS 2.0 base score of 7.2 (HIGH).

How severe is CVE-2009-3522?

This vulnerability has a CVSS 2.0 base score of 7.2, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-3522?

Check the references section for vendor advisories and patches from avast. Update avast_antivirus_home to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2009-3522?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-3522 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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