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Improper Input Validation The advisory has been revoked - it doesn't affect any version of package pyyaml  (opens in a new tab)

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EPSS
5.44% (93rd percentile)

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  • Snyk IDSNYK-DEBIAN8-PYYAML-559108
  • published3 Mar 2020
  • disclosed24 Mar 2020
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Introduced: 3 Mar 2020

CVE-2020-1747  (opens in a new tab)
CWE-20  (opens in a new tab)

Amendment

The Debian security team deemed this advisory irrelevant for Debian:8.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pyyaml package and not the pyyaml package as distributed by Debian.

A vulnerability was discovered in the PyYAML library in versions before 5.3.1, where it is susceptible to arbitrary code execution when it processes untrusted YAML files through the full_load method or with the FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this flaw. An attacker could use this flaw to execute arbitrary code on the system by abusing the python/object/new constructor.

References