#VU6804 Deserialization of untrusted data in Puppet Agent - CVE-2017-2295

Vulnerability identifier: #VU6804

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-2295

CWE-ID: CWE-502

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 attacker to compromise vulnerable system.

The vulnerability exists due to the application performs YAML deserialization in an unsafe manner. A remote attacker can send to server specially crafted serialized data and execute arbitrary code on the target system.

Mitigation
Update to version 4.10.1.

Vulnerable software versions

Puppet Agent:

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External links
https://puppet.com/security/cve/cve-2017-2295

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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