Deserialization in Puppet
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. 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.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.024 (83.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 83.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: 0.000
Affected products
- Puppet
- Puppet Server — versions Puppet prior to 4.10.1
- Debian Linux — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- puppet.com/security/cve/cve-2017-2295 (Vendor Advisory)
- www.debian.org/security/2017/dsa-3862 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/98582 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2017-2295?
- CVE-2017-2295 is a high-severity vulnerability in Puppet, classified under Deserialization of Untrusted Data. CVSS score: 8.2/10. Published 2017-07-05.
- How severe is CVE-2017-2295?
- High severity. CVSS v3 base score is 8.2 out of 10.
- Is CVE-2017-2295 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.