Arbitrary Code Injection Affecting ruby:2.5/rubygems package, versions <0:2.7.6.3-107.module+el8.4.0+10822+fe4fffb1


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
4.22% (90th percentile)

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  • Snyk IDSNYK-RHEL8-RUBY-4053214
  • published26 Jul 2021
  • disclosed26 Nov 2019

Introduced: 26 Nov 2019

CVE-2019-16255  (opens in a new tab)
CWE-94  (opens in a new tab)

How to fix?

Upgrade RHEL:8 ruby:2.5/rubygems to version 0:2.7.6.3-107.module+el8.4.0+10822+fe4fffb1 or higher.
This issue was patched in RHSA-2021:2587.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby:2.5/rubygems package and not the ruby:2.5/rubygems package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows code injection if the first argument (aka the "command" argument) to Shell#[] or Shell#test in lib/shell.rb is untrusted data. An attacker can exploit this to call an arbitrary Ruby method.

CVSS Base Scores

version 3.1