CVE-2009-3020 Denial of service in n/a

High 7.1 Published Updated

Remote attackers can crash Windows Server 2003 systems by tricking users into viewing HTML with malicious EOT fonts, requiring user interaction.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2009-3020?

CVE-2009-3020 is a high-severity denial of service vulnerability in Microsoft Windows Server 2003, published on 31 Aug 2009. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

win32k.sys in Microsoft Windows Server 2003 SP2 allows remote attackers to cause a denial of service (system crash) by referencing a crafted .eot file in the src descriptor of an @font-face Cascading Style Sheets (CSS) rule in an HTML document, possibly related to the Embedded OpenType (EOT) Font Engine, a different vulnerability than CVE-2006-0010, CVE-2009-0231, and CVE-2009-0232. NOTE: some of these details are obtained from third party information.

Which versions are affected by CVE-2009-3020?

It affects 1 product.

Products include Microsoft Windows Server 2003.

How do I fix CVE-2009-3020?

No fix has been published for CVE-2009-3020 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2009-3020 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-3020 exists.

Public exploit code: 1 Exploit-DB entry.

All Microsoft Windows Server 2003 vulnerabilities

Sources

Also known as GHSA-5mgg-m9j7-h63w.

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