Puppet security bypass

puppet-cve20132716-sec-bypass (83171) The risk level is classified as MediumMedium Risk

Description:

Puppet could allow a remote attacker to bypass security restrictions, caused by the installation of the CAS client config file without a randomized secret. An attacker could exploit this vulnerability using a specially-crafted cookie to bypass console authentication.

*CVSS:

Base Score: 5
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: Partial
  Availability Impact: None
 
Temporal Score: 3.7
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Bypass Security

Remedy:

Upgrade to the latest version of Puppet (2.8.0 or later), available from the Puppet Labs Web Site. See References.

References:

  • Puppet Labs Web Site: CVE-2013-2716 (CAS Client Config Vulnerability).
  • CVE-2013-2716: Puppet Labs Puppet Enterprise before 2.8.0 does not use a randomized secret in the CAS client config file (cas_client_config.yml) when upgrading from older 1.2.x or 2.0.x versions, which allows remote attackers to obtain console access via a crafted cookie.
  • SA52862: Puppet Console Authentication Bypass Weakness

Platforms Affected:

  • PuppetLabs Puppet 2.7.0
  • PuppetLabs Puppet 2.7.2

Reported:

Mar 28, 2013

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* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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