Arbitrary Code Injection Affecting ruby2.5 package, versions <2.5.0-1


0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 2.8% (91st percentile)
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NVD
9.8 critical
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Red Hat
8.1 high

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  • Snyk ID SNYK-DEBIAN10-RUBY25-384399
  • published 20 Dec 2017
  • disclosed 20 Dec 2017

How to fix?

Upgrade Debian:10 ruby2.5 to version 2.5.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby2.5 package and not the ruby2.5 package as distributed by Debian. See How to fix? for Debian:10 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.