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Arbitrary Code Injection Affecting ruby-irb package, versions <0:2.0.0.648-33.amzn2.0.1

Severity

 Recommended
medium

Based on Amazon Linux security rating

    Threat Intelligence

    EPSS
    2.8% (91st percentile)

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  • Snyk ID SNYK-AMZN2-RUBYIRB-1660943
  • published 27 Sep 2021
  • disclosed 20 Dec 2017
Report a new vulnerability Found a mistake?

Introduced: 20 Dec 2017

CVE-2017-17790 Open this link in a new tab
CWE-74 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2 ruby-irb to version 0:2.0.0.648-33.amzn2.0.1 or higher.
This issue was patched in ALAS2-2018-983.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby-irb package and not the ruby-irb package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

The lazy_initialize function in lib/resolv.rb in Ruby through 2.4.3 uses Kernel#open, which might allow Command Injection attacks, as demonstrated by a Resolv::Hosts::new argument beginning with a '|' character, a different vulnerability than CVE-2017-17405. NOTE: situations with untrusted input may be highly unlikely.