Microsoft Windows Kerberos Encryption Standard Spoofing Vulnerability
BID:46140
Info
Microsoft Windows Kerberos Encryption Standard Spoofing Vulnerability
| Bugtraq ID: | 46140 |
| Class: | Design Error |
| CVE: |
CVE-2011-0091 |
| Remote: | Yes |
| Local: | No |
| Published: | Feb 08 2011 12:00AM |
| Updated: | Mar 16 2011 07:17PM |
| Credit: | Scott Stender of iSEC Partners |
| Vulnerable: |
Microsoft Windows Server 2008 Standard Edition X64 Microsoft Windows Server 2008 Standard Edition SP2 Microsoft Windows Server 2008 Standard Edition Release Candidate Microsoft Windows Server 2008 Standard Edition Itanium Microsoft Windows Server 2008 Standard Edition 0 Microsoft Windows Server 2008 Standard Edition - Sp2 Web Microsoft Windows Server 2008 Standard Edition - Sp2 Storage Microsoft Windows Server 2008 Standard Edition - Sp2 Hpc Microsoft Windows Server 2008 Standard Edition - Gold Web Microsoft Windows Server 2008 Standard Edition - Gold Storage Microsoft Windows Server 2008 Standard Edition - Gold Standard Microsoft Windows Server 2008 Standard Edition - Gold Itanium Microsoft Windows Server 2008 Standard Edition - Gold Hpc Microsoft Windows Server 2008 Standard Edition - Gold Enterprise Microsoft Windows Server 2008 Standard Edition - Gold Datacenter Microsoft Windows Server 2008 Standard Edition - Gold Microsoft Windows Server 2008 R2 x64 SP1 Microsoft Windows Server 2008 R2 x64 0 Microsoft Windows Server 2008 R2 Itanium SP1 Microsoft Windows Server 2008 R2 Itanium 0 Microsoft Windows Server 2008 R2 Datacenter 0 Microsoft Windows Server 2008 for x64-based Systems SP2 Microsoft Windows Server 2008 for x64-based Systems R2 Microsoft Windows Server 2008 for x64-based Systems 0 Microsoft Windows Server 2008 for Itanium-based Systems SP2 Microsoft Windows Server 2008 for Itanium-based Systems R2 Microsoft Windows Server 2008 for Itanium-based Systems 0 Microsoft Windows Server 2008 for 32-bit Systems SP2 Microsoft Windows Server 2008 for 32-bit Systems 0 Microsoft Windows Server 2008 Enterprise Edition SP2 Microsoft Windows Server 2008 Enterprise Edition Release Candidate Microsoft Windows Server 2008 Enterprise Edition 0 Microsoft Windows Server 2008 Datacenter Edition SP2 Microsoft Windows Server 2008 Datacenter Edition Release Candidate Microsoft Windows Server 2008 Datacenter Edition 0 Microsoft Windows Server 2008 SP2 Beta Microsoft Windows Server 2008 - Sp2 Enterprise X64 Microsoft Windows Server 2008 R2 Microsoft Windows 7 XP Mode 0 Microsoft Windows 7 Ultimate 0 Microsoft Windows 7 Starter 0 Microsoft Windows 7 Professional 0 Microsoft Windows 7 Home Premium 0 Microsoft Windows 7 for x64-based Systems SP1 Microsoft Windows 7 for x64-based Systems 0 Microsoft Windows 7 for Itanium-based Systems 0 Microsoft Windows 7 for 32-bit Systems SP1 Microsoft Windows 7 for 32-bit Systems 0 Microsoft Windows 7 RC Microsoft Windows 7 beta Microsoft Windows 7 Avaya Messaging Application Server 5.2 Avaya Messaging Application Server 5 Avaya Meeting Exchange - Webportal 0 Avaya Meeting Exchange - Web Conferencing Server 0 Avaya Meeting Exchange - Streaming Server 0 Avaya Meeting Exchange - Recording Server 0 Avaya Meeting Exchange - Client Registration Server 0 Avaya Meeting Exchange 5.0 .0.52 Avaya Meeting Exchange 5.2 SP2 Avaya Meeting Exchange 5.2 SP1 Avaya Meeting Exchange 5.2 Avaya Meeting Exchange 5.1 SP1 Avaya Meeting Exchange 5.1 Avaya Meeting Exchange 5.0 SP2 Avaya Meeting Exchange 5.0 SP1 Avaya Meeting Exchange 5.0 Avaya Communication Server 1000 Telephony Manager 4.0 Avaya Communication Server 1000 Telephony Manager 3.0 Avaya CallPilot 5.0 Avaya CallPilot 4.0 Avaya Aura Conferencing 6.0 Standard Avaya Aura Conferencing 6.0 SP1 Standard |
| Not Vulnerable: | |
Discussion
Microsoft Windows Kerberos Encryption Standard Spoofing Vulnerability
The Microsoft Windows implementation of Kerberos is prone to a security vulnerability that may allow attackers to downgrade the cipher suite.
Successful exploits may allow attackers to change the default encryption standard to DES. This may allow attackers to read and forge all Kerberos traffic in a session and impersonate legitimate users. Other attacks are also possible.
The Microsoft Windows implementation of Kerberos is prone to a security vulnerability that may allow attackers to downgrade the cipher suite.
Successful exploits may allow attackers to change the default encryption standard to DES. This may allow attackers to read and forge all Kerberos traffic in a session and impersonate legitimate users. Other attacks are also possible.
Exploit / POC
Microsoft Windows Kerberos Encryption Standard Spoofing Vulnerability
Currently we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].
Currently we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].
Solution / Fix
Microsoft Windows Kerberos Encryption Standard Spoofing Vulnerability
Solution:
Vendor updates are available. Please see the references for more information.
Solution:
Vendor updates are available. Please see the references for more information.
References
Microsoft Windows Kerberos Encryption Standard Spoofing Vulnerability
References:
References: