CVE-2017-2295
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.76%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 8.2 HIGHCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
- EPSS
- 2.76% probability · 86th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-502
- Affected
- puppet/puppet · debian/debian linux
- Source
- security@puppet.com
EPSS 2.8% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.debian.org/security/2017/dsa-3862Third Party Advisory
- http://www.securityfocus.com/bid/98582Third Party Advisory, VDB Entry
- https://puppet.com/security/cve/cve-2017-2295Vendor Advisory
- http://www.debian.org/security/2017/dsa-3862Third Party Advisory
- http://www.securityfocus.com/bid/98582Third Party Advisory, VDB Entry
- https://puppet.com/security/cve/cve-2017-2295Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.