CVE-2013-6999 Null dereference in n/a

What is CVE-2013-6999?

CVE-2013-6999 is a medium-severity vulnerability in Microsoft Windows Server 2008, published on 7 Dec 2013. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The IsHandleEntrySecure function in win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2008 SP2 does not properly validate the tagPROCESSINFO pW32Job field, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted NtUserValidateHandleSecure call for an owned object. NOTE: the vendor reportedly disputes the significance of this report, stating that "it appears to be a local DOS ... we don't consider it a security vulnerability.

Which versions are affected by CVE-2013-6999?

It affects 1 product.

Products include Microsoft Windows Server 2008.

How do I fix CVE-2013-6999?

No fix has been published for CVE-2013-6999 yet. Limit exposure of the affected software until one is available.

Is CVE-2013-6999 being exploited?

There is no known exploitation of CVE-2013-6999 in the wild and no public exploit code.

Other vulnerabilities in Microsoft Windows Server 2008

• CVE-2020-1350 Microsoft Windows DNS Server Remote Code Execution Exploited Critical 10.0
• CVE-2020-1040 Microsoft Hyper-V RemoteFX vGPU Remote Code Execution Exploited Critical 9.0
• CVE-2011-1966 Memory corruption in n/a Critical 10.0
• CVE-2010-0239 Memory corruption in n/a Critical 10.0
• CVE-2010-0240 Code injection in n/a Critical 10.0

All Microsoft Windows Server 2008 vulnerabilities

Sources

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

Also known as GHSA-vxrg-v6vf-8c93.