Arbitrary Code Injection Affecting ruby package, versions <2.5.7-r0


0.0
high

Snyk CVSS

    Attack Complexity High
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.86% (82nd percentile)
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NVD
8.1 high
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SUSE
7.8 high
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Red Hat
8.1 high

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  • Snyk ID SNYK-ALPINE38-RUBY-513715
  • published 13 Nov 2019
  • disclosed 26 Nov 2019

How to fix?

Upgrade Alpine:3.8 ruby to version 2.5.7-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby package and not the ruby package as distributed by Alpine. See How to fix? for Alpine:3.8 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.