CVE-2009-0093 Missing authorization in n/a

What is CVE-2009-0093?

CVE-2009-0093 is a low-severity missing authorization vulnerability in Microsoft Windows 2000, published on 11 Mar 2009. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Windows DNS Server in Microsoft Windows 2000 SP4, Server 2003 SP1 and SP2, and Server 2008, when dynamic updates are enabled, does not restrict registration of the "wpad" hostname, which allows remote authenticated users to hijack the Web Proxy Auto-Discovery (WPAD) feature, and conduct man-in-the-middle attacks by spoofing a proxy server, via a Dynamic Update request for this hostname, aka "DNS Server Vulnerability in WPAD Registration Vulnerability," a related issue to CVE-2007-1692.

Weakness: CWE-20

Which versions are affected by CVE-2009-0093?

It affects 3 products.

Products include Microsoft Windows 2000, Microsoft Windows Server 2003, Microsoft Windows Server 2008.

How do I fix CVE-2009-0093?

No fix has been published for CVE-2009-0093 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2009-0093 being exploited?

There is no known exploitation of CVE-2009-0093 in the wild and no public exploit code.

Other vulnerabilities in Microsoft Windows 2000

• CVE-2008-4250 Microsoft Windows Buffer Overflow Exploited Critical 9.8
• CVE-2010-0232 Microsoft Windows Kernel Exception Handler Exploited High 7.8
• CVE-2009-1123 Microsoft Windows Improper Input Validation Exploited High 7.8
• CVE-2002-0367 Microsoft Windows Privilege Escalation Exploited High 7.8
• CVE-2010-0269 Memory corruption in n/a Critical 10.0

All Microsoft Windows 2000 vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-xrcq-mfw4-37wc.