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Category:   Application (Security)  >   Kerberos Vendors:   MIT
(HP Issues Fix for OpenVMS) Kerberos AES and RC4 Integer Underflow May Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1025501
SecurityTracker URL:  http://securitytracker.com/id/1025501
CVE Reference:   CVE-2009-4212   (Links to External Site)
Date:  May 6 2011
Impact:   Denial of service via network, Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Kerberos. A remote user may be able to execute arbitrary code on the target system.

A remote user can send specially crafted ciphertext data to trigger an integer overflow in the AES and RC4 decryption operations of the MIT Kerberos crypto library and potentially execute arbitrary code on the target system. The code will run with the privileges of the target service.

Impact:   A remote user can execute arbitrary code on the target system or cause the target system to crash.
Solution:   HP has issued a fix (3.2) for OpenVMS Alpha and OpenVMS Integrity servers, available at:

http://h71000.www7.hp.com/openvms/products/kerberos

The HP advisory is available at:

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02824440

Vendor URL:  http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-004.txt (Links to External Site)
Cause:   Boundary error
Underlying OS:  OpenVMS

Message History:   This archive entry is a follow-up to the message listed below.
Jan 12 2010 Kerberos AES and RC4 Integer Underflow May Let Remote Users Execute Arbitrary Code



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