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TI-2018-15731 Aliases CVE-2018-1000076GHSA-mc6j-h948-v2p6

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier…

Priority MEDIUM 47CWE-347Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 31 fixed, 4 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-347.

Summary

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Verification of Cryptographic Signature vulnerability in package.rb that can result in a mis-signed gem could be installed, as the tarball would contain multiple gem signatures.. This vulnerability appears to have been fixed in 2.7.6.

Why it matters now

EPSS 0.02934 87th percentileScored 2026-11-07
Fix Partial rubygems-update (RubyGems): 2.7.6org.jruby:jruby-stdlib (Maven): 9.1.16.0Red Hat: 7 advisoriesRed Hat: 31 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
—rubygems-update (RubyGems)2.2.0 to before 2.7.62.7.6Patch availableGHSA-mc6j-h948-v2p6
—org.jruby:jruby-stdlib (Maven)before 9.1.16.09.1.16.0Patch availableGHSA-mc6j-h948-v2p6
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • rubygems-update (RubyGems) Vendor— Affected 2.2.0 to before 2.7.6 Fixed in 2.7.6 Patch available GHSA-mc6j-h948-v2p6
  • org.jruby:jruby-stdlib (Maven) Vendor— Affected before 9.1.16.0 Fixed in 9.1.16.0 Patch available GHSA-mc6j-h948-v2p6

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*up to 2.2.9; up to 2.3.6; up to 2.4.3; up to 2.5.0Vulnerablerubygems
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*7.0VulnerableDebian
  • cpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:* Versions up to 2.2.9; up to 2.3.6; up to 2.4.3; up to 2.5.0 Vulnerable ·rubygems
  • cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian

Remediation

  • Fix · GHSA-mc6j-h948-v2p6 rubygems-update (RubyGems) Fixed in 2.7.6 Advisory →
  • Fix · GHSA-mc6j-h948-v2p6 org.jruby:jruby-stdlib (Maven) Fixed in 9.1.16.0 Advisory →

Red Hat 7 advisories

  • RHSA-2020:0663 Released 2020-03-03 · Red Hat rating Moderate
    ruby security update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) ruby-2.0.0.648-36.el7_6, ruby-irb-2.0.0.648-36.el7_6, ruby-libs-2.0.0.648-36.el7_6 +6
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) ruby-devel-2.0.0.648-36.el7_6, ruby-doc-2.0.0.648-36.el7_6, ruby-tcltk-2.0.0.648-36.el7_6 +3
    • Red Hat Enterprise Linux Server EUS (v. 7.6) ruby-2.0.0.648-36.el7_6, ruby-irb-2.0.0.648-36.el7_6, ruby-libs-2.0.0.648-36.el7_6 +7
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.6) ruby-devel-2.0.0.648-36.el7_6, ruby-doc-2.0.0.648-36.el7_6, ruby-tcltk-2.0.0.648-36.el7_6 +3
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) ruby-2.0.0.648-36.el7_6, ruby-irb-2.0.0.648-36.el7_6, ruby-libs-2.0.0.648-36.el7_6 +6
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) ruby-devel-2.0.0.648-36.el7_6, ruby-doc-2.0.0.648-36.el7_6, ruby-tcltk-2.0.0.648-36.el7_6 +3
  • RHSA-2020:0591 Released 2020-02-25 · Red Hat rating Moderate
    ruby security update
    • Red Hat Enterprise Linux Server AUS (v. 7.4) ruby-2.0.0.648-35.el7_4, ruby-irb-2.0.0.648-35.el7_4, ruby-libs-2.0.0.648-35.el7_4 +6
    • Red Hat Enterprise Linux Server E4S (v. 7.4) ruby-2.0.0.648-35.el7_4, ruby-irb-2.0.0.648-35.el7_4, ruby-libs-2.0.0.648-35.el7_4 +6
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.4) ruby-devel-2.0.0.648-35.el7_4, ruby-doc-2.0.0.648-35.el7_4, ruby-tcltk-2.0.0.648-35.el7_4 +3
    • Red Hat Enterprise Linux Server Optional E4S (v. 7.4) ruby-devel-2.0.0.648-35.el7_4, ruby-doc-2.0.0.648-35.el7_4, ruby-tcltk-2.0.0.648-35.el7_4 +3
    • Red Hat Enterprise Linux Server Optional TUS (v. 7.4) ruby-devel-2.0.0.648-35.el7_4, ruby-doc-2.0.0.648-35.el7_4, ruby-tcltk-2.0.0.648-35.el7_4 +3
    • Red Hat Enterprise Linux Server TUS (v. 7.4) ruby-2.0.0.648-35.el7_4, ruby-irb-2.0.0.648-35.el7_4, ruby-libs-2.0.0.648-35.el7_4 +6
  • RHSA-2020:0542 Released 2020-02-19 · Red Hat rating Moderate
    ruby security update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.5) ruby-2.0.0.648-35.el7_5, ruby-irb-2.0.0.648-35.el7_5, ruby-libs-2.0.0.648-35.el7_5 +6
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5) ruby-devel-2.0.0.648-35.el7_5, ruby-doc-2.0.0.648-35.el7_5, ruby-tcltk-2.0.0.648-35.el7_5 +3
    • Red Hat Enterprise Linux Server EUS (v. 7.5) ruby-2.0.0.648-35.el7_5, ruby-irb-2.0.0.648-35.el7_5, ruby-libs-2.0.0.648-35.el7_5 +7
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.5) ruby-devel-2.0.0.648-35.el7_5, ruby-doc-2.0.0.648-35.el7_5, ruby-tcltk-2.0.0.648-35.el7_5 +3
Show 4 more Red Hat advisories
  • RHSA-2019:2028 Released 2019-08-06 · Red Hat rating Moderate
    ruby security update
    • Red Hat Enterprise Linux Client (v. 7) ruby-2.0.0.648-36.el7, ruby-irb-2.0.0.648-36.el7, ruby-libs-2.0.0.648-36.el7 +6
    • Red Hat Enterprise Linux Client Optional (v. 7) ruby-devel-2.0.0.648-36.el7, ruby-doc-2.0.0.648-36.el7, ruby-tcltk-2.0.0.648-36.el7 +3
    • Red Hat Enterprise Linux ComputeNode (v. 7) ruby-2.0.0.648-36.el7, ruby-irb-2.0.0.648-36.el7, ruby-libs-2.0.0.648-36.el7 +6
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) ruby-devel-2.0.0.648-36.el7, ruby-doc-2.0.0.648-36.el7, ruby-tcltk-2.0.0.648-36.el7 +3
    • Red Hat Enterprise Linux Server (v. 7) ruby-2.0.0.648-36.el7, ruby-irb-2.0.0.648-36.el7, ruby-libs-2.0.0.648-36.el7 +7
    • Red Hat Enterprise Linux Server Optional (v. 7) ruby-devel-2.0.0.648-36.el7, ruby-doc-2.0.0.648-36.el7, ruby-tcltk-2.0.0.648-36.el7 +3
    • Red Hat Enterprise Linux Workstation (v. 7) ruby-2.0.0.648-36.el7, ruby-irb-2.0.0.648-36.el7, ruby-libs-2.0.0.648-36.el7 +6
    • Red Hat Enterprise Linux Workstation Optional (v. 7) ruby-devel-2.0.0.648-36.el7, ruby-doc-2.0.0.648-36.el7, ruby-tcltk-2.0.0.648-36.el7 +3
  • RHSA-2018:3731 Released 2018-11-29 · Red Hat rating Important
    rh-ruby25-ruby security, bug fix, and enhancement update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-ruby25-ruby-2.5.3-6.el7, rh-ruby25-ruby-devel-2.5.3-6.el7, rh-ruby25-ruby-doc-2.5.3-6.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) rh-ruby25-ruby-2.5.3-6.el7, rh-ruby25-ruby-devel-2.5.3-6.el7, rh-ruby25-ruby-doc-2.5.3-6.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) rh-ruby25-ruby-2.5.3-6.el7, rh-ruby25-ruby-devel-2.5.3-6.el7, rh-ruby25-ruby-doc-2.5.3-6.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) rh-ruby25-ruby-2.5.3-6.el7, rh-ruby25-ruby-devel-2.5.3-6.el7, rh-ruby25-ruby-doc-2.5.3-6.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-ruby25-ruby-2.5.3-6.el7, rh-ruby25-ruby-devel-2.5.3-6.el7, rh-ruby25-ruby-doc-2.5.3-6.el7 +17
  • RHSA-2018:3730 Released 2018-11-29 · 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-2.4.5-91.el6, rh-ruby24-ruby-devel-2.4.5-91.el6, rh-ruby24-ruby-doc-2.4.5-91.el6 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-ruby24-ruby-2.4.5-91.el7, rh-ruby24-ruby-devel-2.4.5-91.el7, rh-ruby24-ruby-doc-2.4.5-91.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) rh-ruby24-ruby-2.4.5-91.el7, rh-ruby24-ruby-devel-2.4.5-91.el7, rh-ruby24-ruby-doc-2.4.5-91.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) rh-ruby24-ruby-2.4.5-91.el7, rh-ruby24-ruby-devel-2.4.5-91.el7, rh-ruby24-ruby-doc-2.4.5-91.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) rh-ruby24-ruby-2.4.5-91.el7, rh-ruby24-ruby-devel-2.4.5-91.el7, rh-ruby24-ruby-doc-2.4.5-91.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) rh-ruby24-ruby-2.4.5-91.el6, rh-ruby24-ruby-devel-2.4.5-91.el6, rh-ruby24-ruby-doc-2.4.5-91.el6 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-ruby24-ruby-2.4.5-91.el7, rh-ruby24-ruby-devel-2.4.5-91.el7, rh-ruby24-ruby-doc-2.4.5-91.el7 +17
  • RHSA-2018:3729 Released 2018-11-29 · 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-2.3.8-69.el6, rh-ruby23-ruby-devel-2.3.8-69.el6, rh-ruby23-ruby-doc-2.3.8-69.el6 +16
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-ruby23-ruby-2.3.8-69.el7, rh-ruby23-ruby-devel-2.3.8-69.el7, rh-ruby23-ruby-doc-2.3.8-69.el7 +16
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) rh-ruby23-ruby-2.3.8-69.el7, rh-ruby23-ruby-devel-2.3.8-69.el7, rh-ruby23-ruby-doc-2.3.8-69.el7 +16
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) rh-ruby23-ruby-2.3.8-69.el7, rh-ruby23-ruby-devel-2.3.8-69.el7, rh-ruby23-ruby-doc-2.3.8-69.el7 +16
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) rh-ruby23-ruby-2.3.8-69.el7, rh-ruby23-ruby-devel-2.3.8-69.el7, rh-ruby23-ruby-doc-2.3.8-69.el7 +16
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) rh-ruby23-ruby-2.3.8-69.el6, rh-ruby23-ruby-devel-2.3.8-69.el6, rh-ruby23-ruby-doc-2.3.8-69.el6 +16
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-ruby23-ruby-2.3.8-69.el7, rh-ruby23-ruby-devel-2.3.8-69.el7, rh-ruby23-ruby-doc-2.3.8-69.el7 +16

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Will not fix
Red Hat Enterprise MRG 2AffectedNo fix planned: Will not fix
Red Hat Satellite 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-2019:2028
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2019:2028
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2019:2028
Red Hat Enterprise Linux ComputeNode EUS (v. 7.5)Fixed RHSA-2020:0542
Red Hat Enterprise Linux ComputeNode EUS (v. 7.6)Fixed RHSA-2020:0663
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2019:2028
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5)Fixed RHSA-2020:0542
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6)Fixed RHSA-2020:0663
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:2028
Red Hat Enterprise Linux Server AUS (v. 7.4)Fixed RHSA-2020:0591
Red Hat Enterprise Linux Server E4S (v. 7.4)Fixed RHSA-2020:0591
Red Hat Enterprise Linux Server EUS (v. 7.5)Fixed RHSA-2020:0542
Red Hat Enterprise Linux Server EUS (v. 7.6)Fixed RHSA-2020:0663
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2019:2028
Red Hat Enterprise Linux Server Optional AUS (v. 7.4)Fixed RHSA-2020:0591
Red Hat Enterprise Linux Server Optional E4S (v. 7.4)Fixed RHSA-2020:0591
Red Hat Enterprise Linux Server Optional EUS (v. 7.5)Fixed RHSA-2020:0542
Red Hat Enterprise Linux Server Optional EUS (v. 7.6)Fixed RHSA-2020:0663
Red Hat Enterprise Linux Server Optional TUS (v. 7.4)Fixed RHSA-2020:0591
Red Hat Enterprise Linux Server TUS (v. 7.4)Fixed RHSA-2020:0591
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2019:2028
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2019:2028
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2020:0663
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2020:0663
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2018:3729, RHSA-2018:3730
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:3729, RHSA-2018:3730, RHSA-2018:3731
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4)Fixed RHSA-2018:3729, RHSA-2018:3730, RHSA-2018:3731
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5)Fixed RHSA-2018:3729, RHSA-2018:3730, RHSA-2018:3731
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6)Fixed RHSA-2018:3729, RHSA-2018:3730, RHSA-2018:3731
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2018:3729, RHSA-2018:3730
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:3729, RHSA-2018:3730, RHSA-2018:3731
Not affected: 1 product
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-1000076
  2. 2026-10-03 Alias added: GHSA-mc6j-h948-v2p6

References

Patch 1

Advisory 15

Other 6

Sources

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