84545 : Chef chef-server-api/app/controllers/cookbooks.rb Multiple Knife Cookbook Command Parsing Remote Cookbook Manipulation
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Timeline

Disclosure Date
2011-06-23

Description

Chef contains a flaw that is triggered when chef-server-api/app/controllers/cookbooks.rb fails to require admin privileges for the update and destroy methods. This may allow a remote authenticated attacker to upload an arbitrary cookbook via the knife cookbook upload command or remove an arbitrary cook book via the knife cookbook delete command.

Classification

Location: Remote / Network Access
Attack Type: Input Manipulation
Impact: Loss of Integrity
Solution: Upgrade
Exploit: Exploit Public
Disclosure: Vendor Verified
OSVDB: Authentication Required, Web Related

Solution

Upgrade to version 0.9.18 or 0.10.2 or higher, as they have been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Opscode, Inc.	Chef	0.9.16
		0.10.0

References

CVE ID: 2011-5097 (see also: NVD)
Vendor Specific Advisory URL: http://tickets.opscode.com/browse/CHEF-2436
Vendor Specific Solution URL: https://github.com/opscode/chef/commit/a4ea6edab2fecb922f999cffb0daa04eeeec7a26

Credit

Daniel Oliver

CVSSv2 Score

CVSSv2 Base Score = 5.5
Source: nvd.nist.gov | Generated: 2012-08-08 | Disagree?

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