CVE-2017-2295

Severity: high (CVSS 8.2 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-07-05 · updated 2026-06-17
Weakness: CWE-502

Description

Versions of Puppet prior to 4.10.1 will deserialize data off the wire (from the agent to the server, in this case) with a attacker-specified format. This could be used to force YAML deserialization in an unsafe manner, which would lead to remote code execution. This change constrains the format of data on the wire to PSON or safely decoded YAML.

Affected products

Debian Linux: 8.0
Puppet Agent: through 4.10.0

References

http://www.debian.org/security/2017/dsa-3862
http://www.securityfocus.com/bid/98582
https://puppet.com/security/cve/cve-2017-2295
http://www.debian.org/security/2017/dsa-3862
http://www.securityfocus.com/bid/98582
https://puppet.com/security/cve/cve-2017-2295

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