Description
In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, the UNIXServer.open and UNIXSocket.open methods are not checked for null characters. It may be connected to an unintended socket.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 9 | ruby2.3 | 2.3.3-1+deb9u3 | DSA-4259-1 |
| Debian 8 | ruby2.1 | 2.1.5-2+deb8u4 | DLA-1421-1 |
| Debian 7 | ruby1.8 | 1.8.7.358-7.1+deb7u6 | DLA-1359-1 |
| Debian 7 | ruby1.9.1 | 1.9.3.194-8.1+deb7u8 | DLA-1358-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | ruby2.3 | 2.3.1-2~16.04.9 | USN-3626-1 |
| Ubuntu 14.04 LTS | ruby1.9.1 | 1.9.3.484-2ubuntu1.11 | USN-3626-1 |
| Ubuntu 14.04 LTS | ruby2.0 | 2.0.0.484-1ubuntu2.9 | USN-3626-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | ruby +5 | 2.0.0.648-36.el7 | RHSA-2019:2028 |
| RHEL 7 | rubygem-bigdecimal | 1.2.0-36.el7 | RHSA-2019:2028 |
| RHEL 7 | rubygem-io-console | 0.4.2-36.el7 | RHSA-2019:2028 |
| RHEL 7 | rubygem-json | 1.7.7-36.el7 | RHSA-2019:2028 |
| RHEL 7 | rubygem-minitest | 4.3.2-36.el7 | RHSA-2019:2028 |
| RHEL 7 | rubygem-psych | 2.0.0-36.el7 | RHSA-2019:2028 |
| RHEL 7 | rubygem-rake | 0.9.6-36.el7 | RHSA-2019:2028 |
| RHEL 7 | rubygem-rdoc | 4.0.0-36.el7 | RHSA-2019:2028 |
| RHEL 7 | rubygems +1 | 2.0.14.1-36.el7 | RHSA-2019:2028 |
| RHEL 3 | rh-ruby23-ruby +5 | 2.3.8-69.el6 | RHSA-2018:3729 |
| RHEL 3 | rh-ruby23-rubygem-bigdecimal | 1.2.8-69.el6 | RHSA-2018:3729 |
| RHEL 3 | rh-ruby23-rubygem-did_you_mean | 1.0.0-69.el6 | RHSA-2018:3729 |
| RHEL 3 | rh-ruby23-rubygem-io-console | 0.4.5-69.el6 | RHSA-2018:3729 |
| RHEL 3 | rh-ruby23-rubygem-json | 1.8.3.1-69.el6 | RHSA-2018:3729 |
| RHEL 3 | rh-ruby23-rubygem-minitest | 5.8.5-69.el6 | RHSA-2018:3729 |
| RHEL 3 | rh-ruby23-rubygem-net-telnet | 0.1.1-69.el6 | RHSA-2018:3729 |
| RHEL 3 | rh-ruby23-rubygem-power_assert | 0.2.6-69.el6 | RHSA-2018:3729 |
| RHEL 3 | rh-ruby23-rubygem-psych | 2.1.0.1-69.el6 | RHSA-2018:3729 |
| RHEL 3 | rh-ruby23-rubygem-rake | 10.4.2-69.el6 | RHSA-2018:3729 |
| RHEL 3 | rh-ruby23-rubygem-rdoc | 4.2.1-69.el6 | RHSA-2018:3729 |
| RHEL 3 | rh-ruby23-rubygem-test-unit | 3.1.5-69.el6 | RHSA-2018:3729 |
| RHEL 3 | rh-ruby23-rubygems +1 | 2.5.2.3-69.el6 | RHSA-2018:3729 |
| RHEL 3 | rh-ruby24-ruby +4 | 2.4.5-91.el6 | RHSA-2018:3730 |
| RHEL 3 | rh-ruby24-rubygem-bigdecimal | 1.3.2-91.el6 | RHSA-2018:3730 |
| RHEL 3 | rh-ruby24-rubygem-did_you_mean | 1.1.0-91.el6 | RHSA-2018:3730 |
| RHEL 3 | rh-ruby24-rubygem-io-console | 0.4.6-91.el6 | RHSA-2018:3730 |
| RHEL 3 | rh-ruby24-rubygem-json | 2.0.4-91.el6 | RHSA-2018:3730 |
| RHEL 3 | rh-ruby24-rubygem-minitest | 5.10.1-91.el6 | RHSA-2018:3730 |
| RHEL 3 | rh-ruby24-rubygem-net-telnet | 0.1.1-91.el6 | RHSA-2018:3730 |
| RHEL 3 | rh-ruby24-rubygem-openssl | 2.0.9-91.el6 | RHSA-2018:3730 |
| RHEL 3 | rh-ruby24-rubygem-power_assert | 0.4.1-91.el6 | RHSA-2018:3730 |
| RHEL 3 | rh-ruby24-rubygem-psych | 2.2.2-91.el6 | RHSA-2018:3730 |
| RHEL 3 | rh-ruby24-rubygem-rake | 12.0.0-91.el6 | RHSA-2018:3730 |
| RHEL 3 | rh-ruby24-rubygem-rdoc | 5.0.0-91.el6 | RHSA-2018:3730 |
| RHEL 3 | rh-ruby24-rubygem-test-unit | 3.2.3-91.el6 | RHSA-2018:3730 |
| RHEL 3 | rh-ruby24-rubygem-xmlrpc | 0.2.1-91.el6 | RHSA-2018:3730 |
| RHEL 3 | rh-ruby24-rubygems +1 | 2.6.14.3-91.el6 | RHSA-2018:3730 |
| RHEL 3 | rh-ruby25-ruby +4 | 2.5.3-6.el7 | RHSA-2018:3731 |
| RHEL 3 | rh-ruby25-rubygem-bigdecimal | 1.3.4-6.el7 | RHSA-2018:3731 |
| RHEL 3 | rh-ruby25-rubygem-did_you_mean | 1.2.0-6.el7 | RHSA-2018:3731 |
| RHEL 3 | rh-ruby25-rubygem-io-console | 0.4.6-6.el7 | RHSA-2018:3731 |
| RHEL 3 | rh-ruby25-rubygem-json | 2.1.0-6.el7 | RHSA-2018:3731 |
| RHEL 3 | rh-ruby25-rubygem-minitest | 5.10.3-6.el7 | RHSA-2018:3731 |
| RHEL 3 | rh-ruby25-rubygem-net-telnet | 0.1.1-6.el7 | RHSA-2018:3731 |
| RHEL 3 | rh-ruby25-rubygem-openssl | 2.1.2-6.el7 | RHSA-2018:3731 |
| RHEL 3 | rh-ruby25-rubygem-power_assert | 1.1.1-6.el7 | RHSA-2018:3731 |
| RHEL 3 | rh-ruby25-rubygem-psych | 3.0.2-6.el7 | RHSA-2018:3731 |
| RHEL 3 | rh-ruby25-rubygem-rake | 12.3.0-6.el7 | RHSA-2018:3731 |
| RHEL 3 | rh-ruby25-rubygem-rdoc | 6.0.1-6.el7 | RHSA-2018:3731 |
| RHEL 3 | rh-ruby25-rubygem-test-unit | 3.2.7-6.el7 | RHSA-2018:3731 |
| RHEL 3 | rh-ruby25-rubygem-xmlrpc | 0.3.0-6.el7 | RHSA-2018:3731 |
| RHEL 3 | rh-ruby25-rubygems +1 | 2.7.6-6.el7 | RHSA-2018:3731 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | ruby2.5 | 2.5.5-4.3.1 | SUSE-SU-2019:1804-1 |
| SLES 15 | ruby2.5 | 2.5.5-4.3.1 | SUSE-SU-2019:1804-1 |
| SLES 12 SP5 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SLES 12 SP4 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SLES 12 SP3 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SLES 12 SP2 | yast2-ruby-bindings | 3.1.53-9.8.1 | SUSE-SU-2020:1570-1 |
| SLES for SAP 12 SP5 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SLES for SAP 12 SP4 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SLES for SAP 12 SP3 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SLES for SAP 12 SP2 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SLES for SAP 12 SP2 | yast2-ruby-bindings | 3.1.53-9.8.1 | SUSE-SU-2020:1570-1 |
| SUSE OpenStack Cloud Crowbar 8 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SUSE OpenStack Cloud 8 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SUSE OpenStack Cloud 7 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SUSE OpenStack Cloud 7 | yast2-ruby-bindings | 3.1.53-9.8.1 | SUSE-SU-2020:1570-1 |
| SUSE HPE Helion OpenStack 8 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SUSE Enterprise Storage 5 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.1 | ruby-bundled-gems-rpmhelper | 0.0.2-lp151.2.1 | openSUSE-SU-2019:1771-1 |
| openSUSE Leap 15.1 | ruby2.5 | 2.5.5-lp151.4.3.1 | openSUSE-SU-2019:1771-1 |
| openSUSE Leap 15.0 | ruby-bundled-gems-rpmhelper | 0.0.2-lp151.2.1 | openSUSE-SU-2019:1771-1 |
| openSUSE Leap 15.0 | ruby2.5 | 2.5.5-lp151.4.3.1 | openSUSE-SU-2019:1771-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | ruby | 2.5.1-r0 | — |
| Alpine v3.23 | ruby | 2.5.1-r0 | — |
| Alpine v3.22 | ruby | 2.5.1-r0 | — |
| Alpine v3.21 | ruby | 2.5.1-r0 | — |
| Alpine v3.20 | ruby | 2.5.1-r0 | — |
Show 16 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | ruby | 2.5.1-r0 | — |
| Alpine v3.18 | ruby | 2.5.1-r0 | — |
| Alpine v3.17 | ruby | 2.5.1-r0 | — |
| Alpine v3.16 | ruby | 2.5.1-r0 | — |
| Alpine v3.15 | ruby | 2.5.1-r0 | — |
| Alpine v3.14 | ruby | 2.5.1-r0 | — |
| Alpine v3.13 | ruby | 2.5.1-r0 | — |
| Alpine v3.12 | ruby | 2.5.1-r0 | — |
| Alpine v3.11 | ruby | 2.5.1-r0 | — |
| Alpine v3.10 | ruby | 2.5.1-r0 | — |
| Alpine v3.9 | ruby | 2.5.1-r0 | — |
| Alpine v3.8 | ruby | 2.5.1-r0 | — |
| Alpine v3.7 | ruby | 2.4.4-r0 | — |
| Alpine v3.6 | ruby | 2.4.4-r0 | — |
| Alpine v3.5 | ruby | 2.3.7-r0 | — |
| Alpine v3.4 | ruby | 2.3.7-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | ruby +5 | 2.0.0.648-36.amzn2.0.1 | ALAS2-2019-1276 |
| Amazon Linux 2 | rubygem-bigdecimal | 1.2.0-36.amzn2.0.1 | ALAS2-2019-1276 |
| Amazon Linux 2 | rubygem-io-console | 0.4.2-36.amzn2.0.1 | ALAS2-2019-1276 |
| Amazon Linux 2 | rubygem-json | 1.7.7-36.amzn2.0.1 | ALAS2-2019-1276 |
| Amazon Linux 2 | rubygem-minitest | 4.3.2-36.amzn2.0.1 | ALAS2-2019-1276 |
| Amazon Linux 2 | rubygem-psych | 2.0.0-36.amzn2.0.1 | ALAS2-2019-1276 |
| Amazon Linux 2 | rubygem-rake | 0.9.6-36.amzn2.0.1 | ALAS2-2019-1276 |
| Amazon Linux 2 | rubygem-rdoc | 4.0.0-36.amzn2.0.1 | ALAS2-2019-1276 |
| Amazon Linux 2 | rubygems +1 | 2.0.14.1-36.amzn2.0.1 | ALAS2-2019-1276 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | ruby +5 | 2.0.0.648-36.el7 | ELSA-2019-2028 |
| Oracle Linux 7 | rubygem-bigdecimal | 1.2.0-36.el7 | ELSA-2019-2028 |
| Oracle Linux 7 | rubygem-io-console | 0.4.2-36.el7 | ELSA-2019-2028 |
| Oracle Linux 7 | rubygem-json | 1.7.7-36.el7 | ELSA-2019-2028 |
| Oracle Linux 7 | rubygem-minitest | 4.3.2-36.el7 | ELSA-2019-2028 |
| Oracle Linux 7 | rubygem-psych | 2.0.0-36.el7 | ELSA-2019-2028 |
| Oracle Linux 7 | rubygem-rake | 0.9.6-36.el7 | ELSA-2019-2028 |
| Oracle Linux 7 | rubygem-rdoc | 4.0.0-36.el7 | ELSA-2019-2028 |
| Oracle Linux 7 | rubygems +1 | 2.0.14.1-36.el7 | ELSA-2019-2028 |
Advisories 15
- RHSA-2019:2028 Red Hat Security Advisory: ruby security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:3731 Red Hat Security Advisory: rh-ruby25-ruby security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:3730 Red Hat Security Advisory: rh-ruby24-ruby security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:3729 Red Hat Security Advisory: rh-ruby23-ruby security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- WID-SEC-2023-1111 Ruby: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 7, 2026
- USN-3626-1 ruby1.9.1, ruby2.0, ruby2.3 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4259-1 ruby2.3 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1359-1 ruby1.8 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1358-1 ruby1.9.1 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1421-1 ruby2.1 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2019:1771-1 Security update for ruby-bundled-gems-rpmhelper, ruby2.5 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1804-1 Security update for ruby-bundled-gems-rpmhelper, ruby2.5 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:1570-1 Security update for ruby2.1 SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2-2019-1276 Moderate: ruby security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Aug 27, 2019
- ELSA-2019-2028 Moderate: ruby security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 13, 2019
References
- https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-5-1-released/
- RHSA-2018:3729 vendor-advisory
- USN-3626-1 vendor-advisory
- 1042004 vdb-entry
- RHSA-2018:3730 vendor-advisory
- [debian-lts-announce] 20180423 [SECURITY] [DLA 1358-1] ruby1.9.1 security update mailing-list
- RHSA-2018:3731 vendor-advisory
- https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-3-7-released/
- 103767 vdb-entry
- [debian-lts-announce] 20180714 [SECURITY] [DLA 1421-1] ruby2.1 security update mailing-list
- https://www.ruby-lang.org/en/news/2018/03/28/poisoned-nul-byte-unixsocket-cve-2018-8779/
- https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-4-4-released/
- DSA-4259 vendor-advisory
- https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-2-10-released/
- [debian-lts-announce] 20180423 [SECURITY] [DLA 1359-1] ruby1.8 security update mailing-list
- openSUSE-SU-2019:1771 vendor-advisory
- RHSA-2019:2028 vendor-advisory