Chef 'clients.rb' Security Bypass Vulnerability

Bugtraq ID:	54956
Class:	Access Validation Error
CVE:	CVE-2011-5098
Remote:	Yes
Local:	No
Published:	Aug 08 2012 12:00AM
Updated:	Aug 08 2012 12:00AM
Credit:	Reported by the vendor
Vulnerable:	OPSCODE Chef 0.9 OPSCODE Chef 0.8.16 OPSCODE Chef 0.8.8 OPSCODE Chef 0.9.18 OPSCODE Chef 0.10.2
Not Vulnerable:	OPSCODE Chef 0.9.20 OPSCODE Chef 0.10.6

Chef 'clients.rb' Security Bypass Vulnerability

Chef is prone to a security-bypass vulnerability that may allow attackers to perform actions without proper authorization.

An attacker can exploit this issue to bypass certain security restrictions and to perform unauthorized actions; this may aid in launching further attacks.

Chef 'clients.rb' Security Bypass 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].

Chef 'clients.rb' Security Bypass Vulnerability

Solution:
Updates are available. Please see the references for more details.

Chef 'clients.rb' Security Bypass Vulnerability

References:

• OPSCODE Chef (OPSCODE)
  
• validation client should not be able to create admin clients (OPSCODE)
  
• Vulnerability Summary for CVE-2011-5098 (NIST)