Homepage

Arbitrary Code Injection Affecting ruby2.3 package, versions <2.3.1-2~16.04.5

Severity

 Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
2.8% (91st percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-UBUNTU1604-RUBY23-308597
  • 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:16.04 ruby2.3 to version 2.3.1-2~16.04.5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby2.3 package and not the ruby2.3 package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 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.