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Arbitrary Code Injection Affecting ruby1.9.1 package, versions <1.9.3.484-2ubuntu1.7

Severity

 Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
2.25% (90th percentile)

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  • Snyk IDSNYK-UBUNTU1404-RUBY191-321133
  • published20 Dec 2017
  • disclosed20 Dec 2017
Report a new vulnerability Found a mistake?

Introduced: 20 Dec 2017

CVE-2017-17790  (opens in a new tab)
CWE-74  (opens in a new tab)

How to fix?

Upgrade Ubuntu:14.04 ruby1.9.1 to version 1.9.3.484-2ubuntu1.7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby1.9.1 package and not the ruby1.9.1 package as distributed by Ubuntu. See How to fix? for Ubuntu:14.04 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.