Remote Code Execution (RCE) Affecting jw.util package, versions [0,]


0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    Exploit Maturity Proof of concept
    EPSS 4.29% (93rd percentile)
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NVD
9.8 critical

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  • Snyk ID SNYK-PYTHON-JWUTIL-570288
  • published 24 May 2020
  • disclosed 21 May 2020
  • credit joel-malwarebenchmark

How to fix?

There is no fixed version for jw.util.

Overview

jw.util is a package for version handling, YAML configuration and file renaming with various backup strategies.

Affected versions of this package are vulnerable to Remote Code Execution (RCE). An exploitable vulnerability exists in the configuration-loading functionality of the jw.util package before 2.3 for Python. When loading a configuration with FromString or FromStream with YAML, one can execute arbitrary Python code, resulting in OS command execution, because safe_load is not used.

References