CVE-2011-2003 Memory corruption in n/a

What is CVE-2011-2003?

CVE-2011-2003 is a critical memory corruption vulnerability in Microsoft Windows 2003 Server, published on 12 Oct 2011. 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

Buffer overflow in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows remote attackers to execute arbitrary code via a crafted .fon file, aka "Font Library File Buffer Overrun Vulnerability."

Weakness: CWE-119

Which versions are affected by CVE-2011-2003?

It affects 6 products.

Products include Microsoft Windows 2003 Server, Microsoft Windows 7, Microsoft Windows Server 2003, Microsoft Windows Server 2008, Microsoft Windows Vista, Microsoft Windows Xp.

How do I fix CVE-2011-2003?

No fix has been published for CVE-2011-2003 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2011-2003 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-2003 exists.

Public exploit code: 1 Exploit-DB entry.

Other vulnerabilities in Microsoft Windows 2003 Server

• CVE-2008-0015 Microsoft Windows Video ActiveX Control Remote Code Execution Exploited High 8.8
• CVE-2015-1701 Microsoft Win32k Privilege Escalation Exploited High 7.8
• CVE-2013-5065 Microsoft Windows Kernel Privilege Escalation Exploited High 7.8
• CVE-2011-1268 Code injection in n/a Critical 10.0
• CVE-2011-1868 Memory corruption in n/a Critical 10.0

All Microsoft Windows 2003 Server vulnerabilities

Sources

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

Also known as GHSA-rr89-f283-c7m9.