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CVE-2017-16616

Description

An exploitable vulnerability exists in the YAML parsing functionality in the YAMLParser method in Interfaces.py in PyAnyAPI before 0.6.1. A YAML parser can execute arbitrary Python commands resulting in command execution because load is used where safe_load should have been used. An attacker can insert Python into loaded YAML to trigger this vulnerability.

POC

Reference

- https://github.com/Stranger6667/pyanyapi/issues/41

- https://joel-malwarebenchmark.github.io/blog/2017/11/08/cve-2017-16616-yamlparser-in-pyanyapi/

Github

- https://github.com/ARPSyndicate/cvemon