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CVE-2009-0234

6.4 · MEDIUM

The DNS Resolver Cache Service (aka DNSCache) in Windows DNS Server in Microsoft Windows 2000 SP4, Server 2003 SP1 and SP2, and Server 2008 does not properly cache crafted DNS responses, which make…

Published Mar 11, 2009microsoftCWE-20EPSS 34.44%

Overview

CVE-2009-0234 is a medium-severity vulnerability affecting microsoft windows_2000. It was published on March 11, 2009 and has a CVSS 2.0 base score of 6.4 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 6.4, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The DNS Resolver Cache Service (aka DNSCache) in Windows DNS Server in Microsoft Windows 2000 SP4, Server 2003 SP1 and SP2, and Server 2008 does not properly cache crafted DNS responses, which makes it easier for remote attackers to predict transaction IDs and poison caches by sending many crafted DNS queries that trigger "unnecessary lookups," aka "DNS Server Response Validation Vulnerability."

Remediation

Check the references section for vendor advisories and patches from microsoft. Update windows_2000 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

Refblogs.technet.com/srd/archive/2009/03/13/ms09-008-dns-and-wins-server-security-update-in-more-detail.aspxRefosvdb.org/52518Refsecunia.com/advisories/34217Refsupport.avaya.com/elmodocs2/security/ASA-2009-083.htmRefwww.kb.cert.org/vuls/id/319331Refwww.securityfocus.com/bid/33988Refwww.securitytracker.com/id?1021831Refwww.us-cert.gov/cas/techalerts/TA09-069A.htmlRefwww.vupen.com/english/advisories/2009/0661Refdocs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-008

How CyberStrike helps

Frequently asked questions

What is CVE-2009-0234?

CVE-2009-0234 is a medium-severity vulnerability affecting microsoft windows_2000. It was published on March 11, 2009 and has a CVSS 2.0 base score of 6.4 (MEDIUM).

How severe is CVE-2009-0234?

This vulnerability has a CVSS 2.0 base score of 6.4, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-0234?

Check the references section for vendor advisories and patches from microsoft. Update windows_2000 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-2009-0234?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-0234 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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