CVE-2011-0091 Weak cryptography in n/a
Man-in-the-middle attackers can downgrade Kerberos encryption to DES, allowing them to spoof traffic and obtain sensitive information.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2011-0091?
CVE-2011-0091 is a medium-severity vulnerability in Microsoft Windows 7, published on 10 Feb 2011. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Kerberos in Microsoft Windows Server 2008 R2 and Windows 7 does not prevent a session from changing from strong encryption to DES encryption, which allows man-in-the-middle attackers to spoof network traffic and obtain sensitive information via a DES downgrade, aka "Kerberos Spoofing Vulnerability."
Weakness: CWE-287
Which versions are affected by CVE-2011-0091?
It affects 2 products.
Products include Microsoft Windows 7, Microsoft Windows Server 2008.
How do I fix CVE-2011-0091?
No fix has been published for CVE-2011-0091 yet. Limit exposure of the affected software until one is available.
Is CVE-2011-0091 being exploited?
There is no known exploitation of CVE-2011-0091 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 7
- CVE-2015-1635 Microsoft HTTP.sys Remote Code Execution
- CVE-2015-2360 Microsoft Win32k Privilege Escalation
- CVE-2014-6324 Microsoft Kerberos Key Distribution Center (KDC) Privilege Escalation
- CVE-2014-6332 Microsoft Windows Object Linking & Embedding (OLE) Automation Array Remote Code Execution
- CVE-2014-4148 Microsoft Windows Remote Code Execution
Sources
Also known as GHSA-49wj-vp5r-r79v.