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Fencer Vulns
medium 5.5

CVE-2018-1000079 json

RubyGems Path Traversal vulnerability

published 2018-03-13 8 y ago modified 2026-06-17 4 mo ago also GHSA-8qxg-mff5-j3wc , EUVD-2022-3218

cvss
5.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.8%
EPSS 2.8% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

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 Directory Traversal vulnerability in gem installation that can result in the gem could write to arbitrary filesystem locations during installation. This attack appear to be exploitable via the victim must install a malicious gem. This vulnerability appears to have been fixed in 2.7.6.

Patch / fix

  • rubygems rubygems-update 2.7.6
  • maven org.jruby:jruby-stdlib 9.1.16.0
  • jruby Debian 14, Debian 13, Debian 12 9.1.17.0-1
  • rubygems Debian 14, Debian 13, Debian 12 3.2.0~rc.1-1

debian advisories DEBIAN-CVE-2018-1000079

  • ruby2.0 Ubuntu 14.04 LTS 2.0.0.484-1ubuntu2.6
  • ruby2.3 Ubuntu 16.04 LTS 2.3.1-2~16.04.7

ubuntu advisories UBUNTU-CVE-2018-1000079

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • ruby RHEL 7 2.0.0.648-36.el7
  • ruby-irb RHEL 7 2.0.0.648-36.el7
  • rubygems RHEL 7 2.0.14.1-36.el7
  • ruby-libs RHEL 7 2.0.0.648-36.el7
  • ruby-tcltk RHEL 7 2.0.0.648-36.el7
  • rubygem-json RHEL 7 1.7.7-36.el7
  • rubygem-rake RHEL 7 0.9.6-36.el7
  • rubygem-rdoc RHEL 7 4.0.0-36.el7

red hat advisories RHSA-2020:0663RHSA-2020:0591RHSA-2020:0542RHSA-2019:2028RHSA-2018:3729RHSA-2018:3730

  • ruby2.1 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +14 more 2.1.9-19.3.2
  • yast2-ruby-bindings SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +1 more 3.1.53-9.8.1
  • ruby2.5 SLE Module for Basesystem 15 SP1, SLE Module for Basesystem 15 2.5.5-4.3.1

suse advisories SUSE-SU-2020:1570-1SUSE-SU-2019:1804-1

  • ruby2.5 openSUSE Leap 15.1, openSUSE Leap 15.0 2.5.5-lp151.4.3.1
  • ruby-bundled-gems-rpmhelper openSUSE Leap 15.1, openSUSE Leap 15.0 0.0.2-lp151.2.1

opensuse advisories openSUSE-SU-2019:1771-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-1000079 updated cvss 5.5

rubygems: Path traversal issue during gem installation allows to write to arbitrary filesystem locations

  • Red Hat Enterprise Linux 6 rubygems Red Hat Enterprise MRG 2 rubygems Red Hat Satellite 6 rubygems Red Hat Subscription Asset Manager ruby193-rubygems
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) ruby 2.0.0.648-36.el7, rubygems 2.0.14.1-36.el7, ruby-irb 2.0.0.648-36.el7, rubygem-json 1.7.7-36.el7, rubygem-rdoc 4.0.0-36.el7, ruby-libs 2.0.0.648-36.el7, +3 more Red Hat Enterprise Linux Client Optional (v. 7) rubygem-rake 0.9.6-36.el7, ruby-tcltk 2.0.0.648-36.el7, rubygem-minitest 4.3.2-36.el7 Red Hat Enterprise Linux ComputeNode (v. 7) ruby 2.0.0.648-36.el7, rubygems 2.0.14.1-36.el7, ruby-irb 2.0.0.648-36.el7, rubygem-json 1.7.7-36.el7, rubygem-rdoc 4.0.0-36.el7, ruby-libs 2.0.0.648-36.el7, +3 more
    fixed: vendor fix RHSA-2019:2028
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.5) ruby 2.0.0.648-35.el7_5, rubygems 2.0.14.1-35.el7_5, ruby-irb 2.0.0.648-35.el7_5, rubygem-json 1.7.7-35.el7_5, rubygem-rdoc 4.0.0-35.el7_5, ruby-libs 2.0.0.648-35.el7_5, +3 more
    fixed: vendor fix RHSA-2020:0542
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) ruby 2.0.0.648-36.el7_6, rubygems 2.0.14.1-36.el7_6, ruby-irb 2.0.0.648-36.el7_6, rubygem-json 1.7.7-36.el7_6, rubygem-rdoc 4.0.0-36.el7_6, ruby-libs 2.0.0.648-36.el7_6, +3 more
    fixed: vendor fix RHSA-2020:0663
  • Red Hat Enterprise Linux ComputeNode Optional (v. 7) rubygem-rake 0.9.6-36.el7, ruby-tcltk 2.0.0.648-36.el7, rubygem-minitest 4.3.2-36.el7
    fixed: vendor fix RHSA-2019:2028
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5) rubygem-rake 0.9.6-35.el7_5, ruby-tcltk 2.0.0.648-35.el7_5, rubygem-minitest 4.3.2-35.el7_5
    fixed: vendor fix RHSA-2020:0542
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) rubygem-rake 0.9.6-36.el7_6, ruby-tcltk 2.0.0.648-36.el7_6, rubygem-minitest 4.3.2-36.el7_6 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) ruby 2.0.0.648-36.el7_6, rubygems 2.0.14.1-36.el7_6, ruby-irb 2.0.0.648-36.el7_6, rubygem-json 1.7.7-36.el7_6, rubygem-rdoc 4.0.0-36.el7_6, ruby-libs 2.0.0.648-36.el7_6, +3 more Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) rubygem-rake 0.9.6-36.el7_6, ruby-tcltk 2.0.0.648-36.el7_6, rubygem-minitest 4.3.2-36.el7_6
    fixed: vendor fix RHSA-2020:0663
  • Red Hat Enterprise Linux Server (v. 7) ruby 2.0.0.648-36.el7, rubygems 2.0.14.1-36.el7, ruby-irb 2.0.0.648-36.el7, rubygem-json 1.7.7-36.el7, rubygem-rdoc 4.0.0-36.el7, ruby-libs 2.0.0.648-36.el7, +3 more
    fixed: vendor fix RHSA-2019:2028
show 11 more
  • Red Hat Enterprise Linux Server AUS (v. 7.4) ruby 2.0.0.648-35.el7_4, rubygems 2.0.14.1-35.el7_4, ruby-irb 2.0.0.648-35.el7_4, rubygem-json 1.7.7-35.el7_4, rubygem-rdoc 4.0.0-35.el7_4, ruby-libs 2.0.0.648-35.el7_4, +3 more Red Hat Enterprise Linux Server E4S (v. 7.4) ruby 2.0.0.648-35.el7_4, rubygems 2.0.14.1-35.el7_4, ruby-irb 2.0.0.648-35.el7_4, rubygem-json 1.7.7-35.el7_4, rubygem-rdoc 4.0.0-35.el7_4, ruby-libs 2.0.0.648-35.el7_4, +3 more
    fixed: vendor fix RHSA-2020:0591
  • Red Hat Enterprise Linux Server EUS (v. 7.5) ruby 2.0.0.648-35.el7_5, rubygems 2.0.14.1-35.el7_5, ruby-irb 2.0.0.648-35.el7_5, rubygem-json 1.7.7-35.el7_5, rubygem-rdoc 4.0.0-35.el7_5, ruby-libs 2.0.0.648-35.el7_5, +3 more
    fixed: vendor fix RHSA-2020:0542
  • Red Hat Enterprise Linux Server EUS (v. 7.6) ruby 2.0.0.648-36.el7_6, rubygems 2.0.14.1-36.el7_6, ruby-irb 2.0.0.648-36.el7_6, rubygem-json 1.7.7-36.el7_6, rubygem-rdoc 4.0.0-36.el7_6, ruby-libs 2.0.0.648-36.el7_6, +3 more
    fixed: vendor fix RHSA-2020:0663
  • Red Hat Enterprise Linux Server Optional (v. 7) rubygem-rake 0.9.6-36.el7, ruby-tcltk 2.0.0.648-36.el7, rubygem-minitest 4.3.2-36.el7
    fixed: vendor fix RHSA-2019:2028
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.4) rubygem-rake 0.9.6-35.el7_4, ruby-tcltk 2.0.0.648-35.el7_4, rubygem-minitest 4.3.2-35.el7_4 Red Hat Enterprise Linux Server Optional E4S (v. 7.4) rubygem-rake 0.9.6-35.el7_4, ruby-tcltk 2.0.0.648-35.el7_4, rubygem-minitest 4.3.2-35.el7_4
    fixed: vendor fix RHSA-2020:0591
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.5) rubygem-rake 0.9.6-35.el7_5, ruby-tcltk 2.0.0.648-35.el7_5, rubygem-minitest 4.3.2-35.el7_5
    fixed: vendor fix RHSA-2020:0542
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.6) rubygem-rake 0.9.6-36.el7_6, ruby-tcltk 2.0.0.648-36.el7_6, rubygem-minitest 4.3.2-36.el7_6
    fixed: vendor fix RHSA-2020:0663
  • Red Hat Enterprise Linux Server Optional TUS (v. 7.4) rubygem-rake 0.9.6-35.el7_4, ruby-tcltk 2.0.0.648-35.el7_4, rubygem-minitest 4.3.2-35.el7_4 Red Hat Enterprise Linux Server TUS (v. 7.4) ruby 2.0.0.648-35.el7_4, rubygems 2.0.14.1-35.el7_4, ruby-irb 2.0.0.648-35.el7_4, rubygem-json 1.7.7-35.el7_4, rubygem-rdoc 4.0.0-35.el7_4, ruby-libs 2.0.0.648-35.el7_4, +3 more
    fixed: vendor fix RHSA-2020:0591
  • Red Hat Enterprise Linux Workstation (v. 7) ruby 2.0.0.648-36.el7, rubygems 2.0.14.1-36.el7, ruby-irb 2.0.0.648-36.el7, rubygem-json 1.7.7-36.el7, rubygem-rdoc 4.0.0-36.el7, ruby-libs 2.0.0.648-36.el7, +3 more Red Hat Enterprise Linux Workstation Optional (v. 7) rubygem-rake 0.9.6-36.el7, ruby-tcltk 2.0.0.648-36.el7, rubygem-minitest 4.3.2-36.el7
    fixed: vendor fix RHSA-2019:2028
  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) rh-ruby23-ruby 2.3.8-69.el6, rh-ruby24-ruby 2.4.5-91.el6, rh-ruby23-ruby-irb 2.3.8-69.el6, rh-ruby24-ruby-irb 2.4.5-91.el6, rh-ruby23-ruby-libs 2.3.8-69.el6, rh-ruby24-ruby-libs 2.4.5-91.el6, +27 more Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-ruby25-ruby 2.5.3-6.el7, rh-ruby23-ruby 2.3.8-69.el7, rh-ruby24-ruby 2.4.5-91.el7, rh-ruby25-ruby-irb 2.5.3-6.el7, rh-ruby25-rubygems 2.7.6-6.el7, rh-ruby23-ruby-irb 2.3.8-69.el7, +44 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) rh-ruby25-ruby 2.5.3-6.el7, rh-ruby23-ruby 2.3.8-69.el7, rh-ruby24-ruby 2.4.5-91.el7, rh-ruby25-ruby-irb 2.5.3-6.el7, rh-ruby25-rubygems 2.7.6-6.el7, rh-ruby23-ruby-irb 2.3.8-69.el7, +44 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) rh-ruby25-ruby 2.5.3-6.el7, rh-ruby23-ruby 2.3.8-69.el7, rh-ruby24-ruby 2.4.5-91.el7, rh-ruby25-ruby-irb 2.5.3-6.el7, rh-ruby25-rubygems 2.7.6-6.el7, rh-ruby23-ruby-irb 2.3.8-69.el7, +44 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) rh-ruby25-ruby 2.5.3-6.el7, rh-ruby23-ruby 2.3.8-69.el7, rh-ruby24-ruby 2.4.5-91.el7, rh-ruby25-ruby-irb 2.5.3-6.el7, rh-ruby25-rubygems 2.7.6-6.el7, rh-ruby23-ruby-irb 2.3.8-69.el7, +44 more Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) rh-ruby23-ruby 2.3.8-69.el6, rh-ruby24-ruby 2.4.5-91.el6, rh-ruby23-ruby-irb 2.3.8-69.el6, rh-ruby24-ruby-irb 2.4.5-91.el6, rh-ruby23-ruby-libs 2.3.8-69.el6, rh-ruby24-ruby-libs 2.4.5-91.el6, +27 more
    +1 more products
    Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-ruby25-ruby 2.5.3-6.el7, rh-ruby23-ruby 2.3.8-69.el7, rh-ruby24-ruby 2.4.5-91.el7, rh-ruby25-ruby-irb 2.5.3-6.el7, rh-ruby25-rubygems 2.7.6-6.el7, rh-ruby23-ruby-irb 2.3.8-69.el7, +44 more
    fixed: vendor fix RHSA-2018:3729
  • Red Hat Enterprise Linux 8 ruby, ruby-irb, rubygems, ruby-libs, rubygem-pg, rubygem-irb, +25 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.78% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
GitHub 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
rubygems rubygems-update
<2.7.6
2.7.6
maven org.jruby:jruby-stdlib
<9.1.16.0
9.1.16.0

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.