#VU8099 Deserialization of untrusted data in MCollective - CVE-2017-2292

Vulnerability identifier: #VU8099

Vulnerability risk: High

CVSSv4.0: 2.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:U/U:Amber]

CVE-ID: CVE-2017-2292

CWE-ID: CWE-502

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MCollective
Server applications / Frameworks for developing and running applications

Vendor: Puppet Labs

Description
The vulnerability allows a remote authenticated attacker to execute arbitrary code.

The weakness exists due to deserialization of YAML from agents without calling safe_load. A remote attacker can send a specially crafted request and execute arbitrary code on the server.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Update to version 2.11.0.

Vulnerable software versions

MCollective: 2.8.7 - 10.0

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External links
https://puppet.com/security/cve/cve-2017-2292

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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