Directory Traversal Affecting python39:3.9/python39-pyyaml package, versions <0:5.4.1-1.module_el8.6.0+2780+a40f65e1


Severity

Recommended
0.0
medium
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.06% (29th percentile)

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  • Snyk IDSNYK-ALMALINUX8-PYTHON39-5726725
  • published28 May 2023
  • disclosed9 Nov 2021

Introduced: 9 Nov 2021

CVE-2021-3426  (opens in a new tab)
CWE-22  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 python39:3.9/python39-pyyaml to version 0:5.4.1-1.module_el8.6.0+2780+a40f65e1 or higher.
This issue was patched in ALSA-2021:4160.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python39:3.9/python39-pyyaml package and not the python39:3.9/python39-pyyaml package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

There's a flaw in Python 3's pydoc. A local or adjacent attacker who discovers or is able to convince another local or adjacent user to start a pydoc server could access the server and use it to disclose sensitive information belonging to the other user that they would not normally be able to access. The highest risk of this flaw is to data confidentiality. This flaw affects Python versions before 3.8.9, Python versions before 3.9.3 and Python versions before 3.10.0a7.

References

CVSS Scores

version 3.1