Puppet X.509 spoofing
|puppet-x509-spoofing (70970)||Medium Risk|
Puppet could allow a remote attacker to conduct spoofing attacks, caused by the insertion of the puppet master's DNS alt names into the X.509 Subject Alternative Name field of the certificate. By persuading a victim to visit a Web site containing a specially-crafted certificate, a remote attacker could exploit this vulnerability using man-in-the-middle techniques to cause the victim to accept spoofed certificates.
Upgrade to the latest version of Puppet (4.0.1 or later), available from the Puppet Labs Web site. See References.
- Puppet Labs Web site: A bug in Puppet 0.24.0 through 2.7.5 causes Puppet to insert the puppet master¿s DNS alt names ("certdnsnames" in puppet.conf) into the X.509 Subject Alternative Name field of all certificates, rather than just the puppet master¿s certificate..
- BID-50356: Puppet 'certdnsnames' Certificate Validation Security Bypass Vulnerability
- CVE-2011-3872: Puppet 2.6.x before 2.6.12 and 2.7.x before 2.7.6, and Puppet Enterprise (PE) Users 1.0, 1.1, and 1.2 before 1.2.4, when signing an agent certificate, adds the Puppet master's certdnsnames values to the X.509 Subject Alternative Name field of the certificate, which allows remote attackers to spoof a Puppet master via a man-in-the-middle (MITM) attack against an agent that uses an alternate DNS name for the master, aka AltNames Vulnerability.
- DSA-2352: puppet -- programming error
- OSVDB ID: 76623: Puppet certdnsnames Puppet Master Impersonation Weakness
- SA46550: Puppet "certdnsnames" Puppet Master Impersonation Vulnerability
- PuppetLabs Puppet 2.6.10
- PuppetLabs Puppet 2.6.3
- PuppetLabs Puppet 2.6.4
- PuppetLabs Puppet 2.7.4
Oct 24, 2011
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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.