Microsoft Kerberos Privilege Escalation Vulnerabilities (2496930)

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  2. Windows : Microsoft Bulletins
  3. Microsoft Kerberos Privilege Escalation Vulnerabilities (2496930)
Summary
This host is missing a critical security update according to Microsoft Bulletin MS11-013.
Impact
Successful exploitation could allow authenticated attackers to obtain a token with elevated privileges on the affected system and allows a man-in-the-middle attacker to force a downgrade in Kerberos communication between a client and server. Impact Level: System
Solution
Run Windows Update and update the listed hotfixes or download and update mentioned hotfixes in the advisory from the below link, http://www.microsoft.com/technet/security/bulletin/ms11-013.mspx
Insight
The flaws are due to: - An error in Kerberos implementation supporting weak hashing mechanisms such as CRC32. - An error in Kerberos that does not correctly enforce stronger default encryption standards.
Affected
Microsoft Windows 7 Service Pack 1 and prior. Microsoft Windows XP Service Pack 3 and prior. Microsoft Windows 2003 Service Pack 2 and prior.
References
Updated on 2015-03-25
Severity
High Severity
Classification
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