PatchTheCVECVE-2017-2295: Versions of Puppet prior to 4.10.1 will deserialize data off the wire (from the agent to the server, in this c
CVE-2017-2295 is a high-severity flaw (CVSS 8.2) affecting puppet, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- High severity
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 8.2 (High) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 2.8% (top 14%) |
| CISA exploited list | No |
| Weakness | CWE-502 |
| Published | 2017-07-05 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2017-2295?
puppet: upgrade to newer than 4.10.0; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2017-2295 being exploited?
CVE-2017-2295 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2017-2295 affect?
CVE-2017-2295 affects puppet, debian linux. Severity is high (CVSS 8.2). 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 r
How urgent is CVE-2017-2295?
Priority 55/100. High severity; On your watchlist
Software pages
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