Arbitrary Command Injection Affecting rubygem-psych package, versions *


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.07% (31st percentile)

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  • Snyk IDSNYK-RHEL7-RUBYGEMPSYCH-1407773
  • published26 Jul 2021
  • disclosed2 May 2021

Introduced: 2 May 2021

CVE-2021-31799  (opens in a new tab)
CWE-77  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 rubygem-psych.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rubygem-psych package and not the rubygem-psych package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

In RDoc 3.11 through 6.x before 6.3.1, as distributed with Ruby through 3.0.1, it is possible to execute arbitrary code via | and tags in a filename.

CVSS Scores

version 3.1