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TI-2017-13029 Aliases CVE-2017-17790GHSA-47cm-jxff-w8wg

The lazy_initialize function in lib/resolv.rb in Ruby through 2.4.3 uses Kernel#open…

Priority MEDIUM 51CWE-74Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 17 fixed, 4 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

EPSS 0.05913 93rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 4 advisoriesRed Hat: 17 fixed, 4 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*2.2 – 2.2.8; 2.3 – 2.3.5; 2.4 – 2.4.2Vulnerableruby
cpe:2.3:a:ruby-lang:ruby:2.5.0:preview1:*:*:*:*:*:*2.5.0 preview1Vulnerableruby
  • cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* Versions 2.2 – 2.2.8; 2.3 – 2.3.5; 2.4 – 2.4.2 Vulnerable ·ruby
  • cpe:2.3:a:ruby-lang:ruby:2.5.0:preview1:*:*:*:*:*:* Versions 2.5.0 preview1 Vulnerable ·ruby

Remediation

Red Hat 4 advisories

  • RHSA-2018:0585 Released 2018-03-26 · Red Hat rating Important
    rh-ruby23-ruby security, bug fix, and enhancement update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) rh-ruby23-ruby-2.3.6-67.el6, rh-ruby23-ruby-devel-2.3.6-67.el6, rh-ruby23-ruby-doc-2.3.6-67.el6 +16
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-ruby23-ruby-2.3.6-67.el7, rh-ruby23-ruby-devel-2.3.6-67.el7, rh-ruby23-ruby-doc-2.3.6-67.el7 +16
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) rh-ruby23-ruby-2.3.6-67.el6, rh-ruby23-ruby-devel-2.3.6-67.el6, rh-ruby23-ruby-doc-2.3.6-67.el6 +16
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.3) rh-ruby23-ruby-2.3.6-67.el7, rh-ruby23-ruby-devel-2.3.6-67.el7, rh-ruby23-ruby-doc-2.3.6-67.el7 +16
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) rh-ruby23-ruby-2.3.6-67.el7, rh-ruby23-ruby-devel-2.3.6-67.el7, rh-ruby23-ruby-doc-2.3.6-67.el7 +16
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) rh-ruby23-ruby-2.3.6-67.el6, rh-ruby23-ruby-devel-2.3.6-67.el6, rh-ruby23-ruby-doc-2.3.6-67.el6 +16
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-ruby23-ruby-2.3.6-67.el7, rh-ruby23-ruby-devel-2.3.6-67.el7, rh-ruby23-ruby-doc-2.3.6-67.el7 +16
  • RHSA-2018:0584 Released 2018-03-26 · Red Hat rating Important
    rh-ruby24-ruby security, bug fix, and enhancement update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) rh-ruby24-ruby-2.4.3-90.el6, rh-ruby24-ruby-devel-2.4.3-90.el6, rh-ruby24-ruby-doc-2.4.3-90.el6 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-ruby24-ruby-2.4.3-90.el7, rh-ruby24-ruby-devel-2.4.3-90.el7, rh-ruby24-ruby-doc-2.4.3-90.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) rh-ruby24-ruby-2.4.3-90.el6, rh-ruby24-ruby-devel-2.4.3-90.el6, rh-ruby24-ruby-doc-2.4.3-90.el6 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.3) rh-ruby24-ruby-2.4.3-90.el7, rh-ruby24-ruby-devel-2.4.3-90.el7, rh-ruby24-ruby-doc-2.4.3-90.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) rh-ruby24-ruby-2.4.3-90.el7, rh-ruby24-ruby-devel-2.4.3-90.el7, rh-ruby24-ruby-doc-2.4.3-90.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) rh-ruby24-ruby-2.4.3-90.el6, rh-ruby24-ruby-devel-2.4.3-90.el6, rh-ruby24-ruby-doc-2.4.3-90.el6 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-ruby24-ruby-2.4.3-90.el7, rh-ruby24-ruby-devel-2.4.3-90.el7, rh-ruby24-ruby-doc-2.4.3-90.el7 +17
  • RHSA-2018:0583 Released 2018-03-26 · Red Hat rating Important
    rh-ruby22-ruby security, bug fix, and enhancement update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) rh-ruby22-ruby-2.2.9-19.el6, rh-ruby22-ruby-devel-2.2.9-19.el6, rh-ruby22-ruby-doc-2.2.9-19.el6 +14
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-ruby22-ruby-2.2.9-19.el7, rh-ruby22-ruby-devel-2.2.9-19.el7, rh-ruby22-ruby-doc-2.2.9-19.el7 +14
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) rh-ruby22-ruby-2.2.9-19.el6, rh-ruby22-ruby-devel-2.2.9-19.el6, rh-ruby22-ruby-doc-2.2.9-19.el6 +14
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.3) rh-ruby22-ruby-2.2.9-19.el7, rh-ruby22-ruby-devel-2.2.9-19.el7, rh-ruby22-ruby-doc-2.2.9-19.el7 +14
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) rh-ruby22-ruby-2.2.9-19.el7, rh-ruby22-ruby-devel-2.2.9-19.el7, rh-ruby22-ruby-doc-2.2.9-19.el7 +14
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) rh-ruby22-ruby-2.2.9-19.el6, rh-ruby22-ruby-devel-2.2.9-19.el6, rh-ruby22-ruby-doc-2.2.9-19.el6 +14
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-ruby22-ruby-2.2.9-19.el7, rh-ruby22-ruby-devel-2.2.9-19.el7, rh-ruby22-ruby-doc-2.2.9-19.el7 +14
Show 1 more Red Hat advisories
  • RHSA-2018:0378 Released 2018-02-28 · Red Hat rating Important
    ruby security update
    • Red Hat Enterprise Linux Client (v. 7) ruby-2.0.0.648-33.el7_4, ruby-irb-2.0.0.648-33.el7_4, ruby-libs-2.0.0.648-33.el7_4 +6
    • Red Hat Enterprise Linux Client Optional (v. 7) ruby-devel-2.0.0.648-33.el7_4, ruby-doc-2.0.0.648-33.el7_4, ruby-tcltk-2.0.0.648-33.el7_4 +3
    • Red Hat Enterprise Linux ComputeNode (v. 7) ruby-2.0.0.648-33.el7_4, ruby-irb-2.0.0.648-33.el7_4, ruby-libs-2.0.0.648-33.el7_4 +6
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) ruby-devel-2.0.0.648-33.el7_4, ruby-doc-2.0.0.648-33.el7_4, ruby-tcltk-2.0.0.648-33.el7_4 +3
    • Red Hat Enterprise Linux Server (v. 7) ruby-2.0.0.648-33.el7_4, ruby-irb-2.0.0.648-33.el7_4, ruby-libs-2.0.0.648-33.el7_4 +7
    • Red Hat Enterprise Linux Server Optional (v. 7) ruby-devel-2.0.0.648-33.el7_4, ruby-doc-2.0.0.648-33.el7_4, ruby-tcltk-2.0.0.648-33.el7_4 +3
    • Red Hat Enterprise Linux Workstation (v. 7) ruby-2.0.0.648-33.el7_4, ruby-irb-2.0.0.648-33.el7_4, ruby-libs-2.0.0.648-33.el7_4 +6
    • Red Hat Enterprise Linux Workstation Optional (v. 7) ruby-devel-2.0.0.648-33.el7_4, ruby-doc-2.0.0.648-33.el7_4, ruby-tcltk-2.0.0.648-33.el7_4 +3
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) ruby-2.0.0.648-33.el7_4, ruby-irb-2.0.0.648-33.el7_4, ruby-libs-2.0.0.648-33.el7_4 +6
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) ruby-devel-2.0.0.648-33.el7_4, ruby-doc-2.0.0.648-33.el7_4, ruby-tcltk-2.0.0.648-33.el7_4 +3

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
CloudForms Management Engine 5AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Will not fix
Red Hat Subscription Asset ManagerAffectedNo fix planned: Will not fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2018:0378
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2018:0378
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2018:0378
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2018:0378
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:0378
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2018:0378
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:0378
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2018:0378
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2018:0378
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2018:0378
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2018:0583, RHSA-2018:0584, RHSA-2018:0585
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:0583, RHSA-2018:0584, RHSA-2018:0585
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7)Fixed RHSA-2018:0583, RHSA-2018:0584, RHSA-2018:0585
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.3)Fixed RHSA-2018:0583, RHSA-2018:0584, RHSA-2018:0585
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4)Fixed RHSA-2018:0583, RHSA-2018:0584, RHSA-2018:0585
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2018:0583, RHSA-2018:0584, RHSA-2018:0585
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:0583, RHSA-2018:0584, RHSA-2018:0585

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-17790
  2. 2026-10-03 Alias added: GHSA-47cm-jxff-w8wg

References

Exploit 1

Advisory 5

Other 3

  • TI-2026-71508 Integer overflow in GitLab allows code execution on the server KEVCVSS 3.1CRITICAL 10.0
  • TI-2017-12709 Ruby before 2.4.3 allows Net::FTP command injection. CVSS 3.0HIGH 8.8
  • TI-2008-03501 Algorithmic complexity vulnerability in the WEBrick::HTTPUtils.split_header_value… CVSS 2.0HIGH 7.8
  • TI-2021-09891 In Ruby through 3.0 on Windows, a remote attacker can submit a crafted path when a Web… CVSS 3.1HIGH 7.5
  • TI-2013-03637 Heap-based buffer overflow in Ruby 1.8, 1.9 before 1.9.3-p484, 2.0 before 2.0.0-p353, 2.1… CVSS 2.0MEDIUM 6.8
  • TI-2018-11751 An issue was discovered in the OpenSSL library in Ruby before 2.3.8, 2.4.x before 2.4.5… CVSS 3.0CRITICAL 9.8
See all 92 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences