Deserialization of Untrusted Data Affecting puppet package, versions <3.7.2-4+deb8u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published5 Jul 2017
- disclosed5 Jul 2017
Introduced: 5 Jul 2017
CVE-2017-2295 (opens in a new tab)How to fix?
Upgrade Debian:8 puppet to version 3.7.2-4+deb8u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream puppet package and not the puppet package as distributed by Debian.
See How to fix? for Debian:8 relevant fixed versions and status.
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.