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Arbitrary Code Execution Affecting pyyaml package, versions [5.1b1,5.4)

0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    Exploit Maturity Mature
    EPSS 0.27% (68th percentile)
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NVD
9.8 critical
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SUSE
8.8 high
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Red Hat
9.8 critical

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  • Snyk ID SNYK-PYTHON-PYYAML-590151
  • published 26 Jul 2020
  • disclosed 22 Jul 2020
  • credit Unknown
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Introduced: 22 Jul 2020

CVE-2020-14343 Open this link in a new tab
CWE-94 Open this link in a new tab

How to fix?

Upgrade PyYAML to version 5.4 or higher.

Overview

Affected versions of this package are vulnerable to Arbitrary Code Execution. It processes untrusted YAML files through the full_load method or with the FullLoader loader. This is due to an incomplete fix for CVE-2020-1747.