Puppet REST symlink

puppet-rest-symlink (74794) The risk level is classified as MediumMedium Risk

Description:

Puppet could allow a local attacker to launch a symlink attack, caused by the improper handling of REST requests for a file from a remote filebucket. A local attacker could exploit this vulnerability by creating a symbolic link from a temporary file to various files on the system, which could allow the attacker to read files from the puppet master?s user account.

*CVSS:

Base Score: 3.3
  Access Vector: Local
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 2.9
  Exploitability: High
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

File Manipulation

Remedy:

Upgrade to the latest version of Puppet (2.5.1, 2.7.13, or 2.6.15 or later), available from the Puppet Labs Web site. See References.

References:

  • Puppet Labs Web site: CVE-2012-1986 (Arbitrary File Read Access).
  • BID-52975: Puppet Multiple Security Vulnerabilities
  • CVE-2012-1986: Puppet 2.6.x before 2.6.15 and 2.7.x before 2.7.13, and Puppet Enterprise (PE) Users 1.0, 1.1, 1.2.x, 2.0.x, and 2.5.x before 2.5.1 allows remote authenticated users with an authorized SSL key and certain permissions on the puppet master to read arbitrary files via a symlink attack in conjunction with a crafted REST request for a file in a filebucket.
  • DSA-2451: puppet -- several vulnerabilities
  • OSVDB ID: 81307: Puppet Remote Filebucket Rest Request Parsing Symlink Arbitrary File Access
  • RHSA-2012-1542: Moderate: CloudForms Commons 1.1 security update
  • SA48743: Puppet Multiple Vulnerabilities

Platforms Affected:

  • PuppetLabs Puppet 2.6
  • PuppetLabs Puppet 2.6.10
  • PuppetLabs Puppet 2.6.11
  • PuppetLabs Puppet 2.6.13
  • PuppetLabs Puppet 2.7.10
  • PuppetLabs Puppet 2.7.4
  • PuppetLabs Puppet 2.7.5
  • RedHat Linux Advanced Workstation 2.1 Itanium

Reported:

Apr 11, 2012

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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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