{"id":"CVE-2017-2295","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-2295","generatedAt":"2026-10-28T21:56:10.028Z","title":"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.","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.","published":"2017-07-05T15:29:00.000Z","lastModified":"2026-06-17T01:15:54.000Z","status":"Modified","sourceIdentifier":"security@puppet.com","cvss":{"version":"3.0","score":8.2,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N"},"cwe":["CWE-502"],"affected":["puppet/puppet","debian/debian linux"],"epss":{"score":0.02762,"percentile":0.86212,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"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."},"changes":[],"references":[{"url":"http://www.debian.org/security/2017/dsa-3862","tags":["Third Party Advisory"],"source":"security@puppet.com"},{"url":"http://www.securityfocus.com/bid/98582","tags":["Third Party Advisory","VDB Entry"],"source":"security@puppet.com"},{"url":"https://puppet.com/security/cve/cve-2017-2295","tags":["Vendor Advisory"],"source":"security@puppet.com"},{"url":"http://www.debian.org/security/2017/dsa-3862","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/98582","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://puppet.com/security/cve/cve-2017-2295","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-2295","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}