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OpenAdvisories
Unscored CVE-2018-8778 EUVD-2018-20387GHSA-wvhq-ch4h-8pwr

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, an attacker controlling the unpackin…

Published Apr 3, 2018 · Updated Aug 5, 2024 · Assigned by mitre

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, an attacker controlling the unpacking format (similar to format string vulnerabilities) can trigger a buffer under-read in the String#unpack method, resulting in a massive and controlled information disclosure.

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.

ReleasePackageFixed inAdvisory
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
ReleasePackageFixed inAdvisory
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
ReleasePackageFixed inAdvisory
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
Show 5 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
RHEL 7.6 EUS ruby +5 2.0.0.648-37.el7_6 RHSA-2020:2288
RHEL 7.6 EUS rubygem-bigdecimal 1.2.0-37.el7_6 RHSA-2020:2288
RHEL 7.6 EUS rubygem-io-console 0.4.2-37.el7_6 RHSA-2020:2288
RHEL 7.6 EUS rubygem-json 1.7.7-37.el7_6 RHSA-2020:2288
RHEL 7.6 EUS rubygem-minitest 4.3.2-37.el7_6 RHSA-2020:2288
RHEL 7.6 EUS rubygem-psych 2.0.0-37.el7_6 RHSA-2020:2288
RHEL 7.6 EUS rubygem-rake 0.9.6-37.el7_6 RHSA-2020:2288
RHEL 7.6 EUS rubygem-rdoc 4.0.0-37.el7_6 RHSA-2020:2288
RHEL 7.6 EUS rubygems +1 2.0.14.1-37.el7_6 RHSA-2020:2288
RHEL 7.5 EUS ruby +5 2.0.0.648-36.el7_5 RHSA-2020:1963
RHEL 7.5 EUS rubygem-bigdecimal 1.2.0-36.el7_5 RHSA-2020:1963
RHEL 7.5 EUS rubygem-io-console 0.4.2-36.el7_5 RHSA-2020:1963
RHEL 7.5 EUS rubygem-json 1.7.7-36.el7_5 RHSA-2020:1963
RHEL 7.5 EUS rubygem-minitest 4.3.2-36.el7_5 RHSA-2020:1963
RHEL 7.5 EUS rubygem-psych 2.0.0-36.el7_5 RHSA-2020:1963
RHEL 7.5 EUS rubygem-rake 0.9.6-36.el7_5 RHSA-2020:1963
RHEL 7.5 EUS rubygem-rdoc 4.0.0-36.el7_5 RHSA-2020:1963
RHEL 7.5 EUS rubygems +1 2.0.14.1-36.el7_5 RHSA-2020:1963
RHEL 7.4 TUS ruby +5 2.0.0.648-36.el7_4 RHSA-2020:2212
RHEL 7.4 TUS rubygem-bigdecimal 1.2.0-36.el7_4 RHSA-2020:2212
RHEL 7.4 TUS rubygem-io-console 0.4.2-36.el7_4 RHSA-2020:2212
RHEL 7.4 TUS rubygem-json 1.7.7-36.el7_4 RHSA-2020:2212
RHEL 7.4 TUS rubygem-minitest 4.3.2-36.el7_4 RHSA-2020:2212
RHEL 7.4 TUS rubygem-psych 2.0.0-36.el7_4 RHSA-2020:2212
RHEL 7.4 TUS rubygem-rake 0.9.6-36.el7_4 RHSA-2020:2212
RHEL 7.4 TUS rubygem-rdoc 4.0.0-36.el7_4 RHSA-2020:2212
RHEL 7.4 TUS rubygems +1 2.0.14.1-36.el7_4 RHSA-2020:2212
RHEL 7.4 E4S ruby +5 2.0.0.648-36.el7_4 RHSA-2020:2212
RHEL 7.4 E4S rubygem-bigdecimal 1.2.0-36.el7_4 RHSA-2020:2212
RHEL 7.4 E4S rubygem-io-console 0.4.2-36.el7_4 RHSA-2020:2212
RHEL 7.4 E4S rubygem-json 1.7.7-36.el7_4 RHSA-2020:2212
RHEL 7.4 E4S rubygem-minitest 4.3.2-36.el7_4 RHSA-2020:2212
RHEL 7.4 E4S rubygem-psych 2.0.0-36.el7_4 RHSA-2020:2212
RHEL 7.4 E4S rubygem-rake 0.9.6-36.el7_4 RHSA-2020:2212
RHEL 7.4 E4S rubygem-rdoc 4.0.0-36.el7_4 RHSA-2020:2212
RHEL 7.4 E4S rubygems +1 2.0.14.1-36.el7_4 RHSA-2020:2212
RHEL 7.4 AUS ruby +5 2.0.0.648-36.el7_4 RHSA-2020:2212
RHEL 7.4 AUS rubygem-bigdecimal 1.2.0-36.el7_4 RHSA-2020:2212
RHEL 7.4 AUS rubygem-io-console 0.4.2-36.el7_4 RHSA-2020:2212
RHEL 7.4 AUS rubygem-json 1.7.7-36.el7_4 RHSA-2020:2212
RHEL 7.4 AUS rubygem-minitest 4.3.2-36.el7_4 RHSA-2020:2212
RHEL 7.4 AUS rubygem-psych 2.0.0-36.el7_4 RHSA-2020:2212
RHEL 7.4 AUS rubygem-rake 0.9.6-36.el7_4 RHSA-2020:2212
RHEL 7.4 AUS rubygem-rdoc 4.0.0-36.el7_4 RHSA-2020:2212
RHEL 7.4 AUS rubygems +1 2.0.14.1-36.el7_4 RHSA-2020:2212
ReleasePackageFixed inAdvisory
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)
ReleasePackageFixed inAdvisory
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
ReleasePackageFixed inAdvisory
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
ReleasePackageFixed inAdvisory
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)
ReleasePackageFixed inAdvisory
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

ReleasePackageFixed inAdvisory
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

ReleasePackageFixed inAdvisory
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 18

References