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Deserialization of Untrusted Data Affecting rubygem-psych package, versions <0:2.0.0-33.el7_4

Severity

 Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
17.22% (97th percentile)

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  • Snyk IDSNYK-ORACLE7-RUBYGEMPSYCH-2521493
  • published10 Apr 2022
  • disclosed11 Oct 2017
Report a new vulnerability Found a mistake?

Introduced: 11 Oct 2017

CVE-2017-0903  (opens in a new tab)
CWE-502  (opens in a new tab)

How to fix?

Upgrade Oracle:7 rubygem-psych to version 0:2.0.0-33.el7_4 or higher.
This issue was patched in ELSA-2018-0378.

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 Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

RubyGems versions between 2.0.0 and 2.6.13 are vulnerable to a possible remote code execution vulnerability. YAML deserialization of gem specifications can bypass class white lists. Specially crafted serialized objects can possibly be used to escalate to remote code execution.