cve/2011/CVE-2011-0091.md

### [CVE-2011-0091](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0091)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen)

### 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."

### POC

#### Reference
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-013

#### Github
No PoCs found on GitHub currently.