CVE-2009-0233

Severity: medium (CVSS 5.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 27.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-03-11 · updated 2026-06-16
Weakness: CWE-20

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, when dynamic updates are enabled, does not reuse cached DNS responses in all applicable situations, which makes it easier for remote attackers to predict transaction IDs and poison caches by simultaneously sending crafted DNS queries and responses, aka "DNS Server Query Validation Vulnerability."

Affected products

Microsoft Windows 2000: all versions
Microsoft Windows Server 2003: all versions
Microsoft Windows Server 2008: all versions

References

http://blogs.technet.com/srd/archive/2009/03/13/ms09-008-dns-and-wins-server-security-update-in-more-detail.aspx
http://osvdb.org/52517
http://secunia.com/advisories/34217
http://support.avaya.com/elmodocs2/security/ASA-2009-083.htm
http://www.securityfocus.com/bid/33982
http://www.securitytracker.com/id?1021831
http://www.us-cert.gov/cas/techalerts/TA09-069A.html
http://www.vupen.com/english/advisories/2009/0661
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-008
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6228
http://blogs.technet.com/srd/archive/2009/03/13/ms09-008-dns-and-wins-server-security-update-in-more-detail.aspx
http://osvdb.org/52517

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