Vulnerability Database

300,214

Total vulnerabilities in the database

CVE-2017-17790

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.

  • Published: Dec 20, 2017
  • Updated: Nov 9, 2025
  • CVE: CVE-2017-17790
  • Severity: High
  • Exploit:

CVSS v2:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/Au:N/C:P/I:P/A:P

CWEs:

Software From Fixed in
ruby-lang / ruby 2.5.0-preview1 2.5.0-preview1.x
ruby-lang / ruby 2.4 2.4.2.x
ruby-lang / ruby 2.2 2.2.8.x
ruby-lang / ruby 2.3 2.3.5.x