CVE-2019-16056 Affecting python27:2.7/python2-pyyaml package, versions <0:3.12-16.module_el8.6.0+2781+fed64c13


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.49% (76th percentile)

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  • Snyk IDSNYK-ALMALINUX8-PYTHON27-5618141
  • published28 May 2023
  • disclosed28 Apr 2020

Introduced: 28 Apr 2020

CVE-2019-16056  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 python27:2.7/python2-pyyaml to version 0:3.12-16.module_el8.6.0+2781+fed64c13 or higher.
This issue was patched in ALSA-2020:1605.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python27:2.7/python2-pyyaml package and not the python27:2.7/python2-pyyaml package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

An issue was discovered in Python through 2.7.16, 3.x through 3.5.7, 3.6.x through 3.6.9, and 3.7.x through 3.7.4. The email module wrongly parses email addresses that contain multiple @ characters. An application that uses the email module and implements some kind of checks on the From/To headers of a message could be tricked into accepting an email address that should be denied. An attack may be the same as in CVE-2019-11340; however, this CVE applies to Python more generally.

References

CVSS Scores

version 3.1