#VU37740 Improper Certificate Validation in Puppet Agent - CVE-2015-4100

Vulnerability identifier: #VU37740

Vulnerability risk: Medium

CVSSv4.0: 2.4 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2015-4100

CWE-ID: CWE-295

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Puppet Agent
Server applications / Conferencing, Collaboration and VoIP solutions

Vendor: Puppet Labs

Description

The vulnerability allows a remote authenticated user to #BASIC_IMPACT#.

Puppet Enterprise 3.7.x and 3.8.0 might allow remote authenticated users to manage certificates for arbitrary nodes by leveraging a client certificate trusted by the master, aka a "Certificate Authority Reverse Proxy Vulnerability."

Mitigation
Install update from vendor's website.

Vulnerable software versions

Puppet Agent: 3.8.0

---

External links
https://puppet.com/security/cve/CVE-2015-4100

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.