CVE-2011-1877: Use After Free
First published: Wed Jul 13 2011(Updated: )
Use-after-free vulnerability in win32k.sys in the kernel-mode drivers in Microsoft Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows local users to gain privileges via a crafted application that leverages incorrect driver object management, aka "Win32k Use After Free Vulnerability."
Credit: secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Windows 7 | ||
| Microsoft Windows 7 | =sp1 | |
| Microsoft Windows 7 | =sp1 | |
| Microsoft Windows Server | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server | =sp2 | |
| Microsoft Windows Server | =sp2 | |
| Microsoft Windows Server | =sp2 | |
| Microsoft Windows Server | =r2 | |
| Microsoft Windows Server | =r2 | |
| Microsoft Windows Vista | =sp1 | |
| Microsoft Windows Vista | =sp2 | |
| Microsoft Windows Vista | =sp2 | |
| Microsoft Windows Vista | =sp1 |
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Reference Links
- http://support.avaya.com/css/P8/documents/100144947
- http://secunia.com/advisories/45186
- http://osvdb.org/73779
- http://www.securityfocus.com/bid/48591
- http://www.securitytracker.com/id?1025761
- http://www.us-cert.gov/cas/techalerts/TA11-193A.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12847
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-054
Frequently Asked Questions
What is the severity of CVE-2011-1877?
CVE-2011-1877 has a critical severity rating, allowing local users to gain elevated privileges.
How do I fix CVE-2011-1877?
To fix CVE-2011-1877, apply the latest security updates provided by Microsoft for affected Windows versions.
Which operating systems are affected by CVE-2011-1877?
CVE-2011-1877 affects Microsoft Windows Vista SP1 and SP2, Windows Server 2008, and Windows 7 SP1, among others.
What type of vulnerability is CVE-2011-1877?
CVE-2011-1877 is a use-after-free vulnerability within the win32k.sys kernel-mode driver.
Can exploitation of CVE-2011-1877 be mitigated?
Exploitation of CVE-2011-1877 can be mitigated by restricting access to the system for untrusted applications and users.
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