Path traversal vulnerability in install_location function of package.rb was found that is triggered when writing to a symlinked basedir outside of the root. Upstream fix: https://github.com/rubygems/rubygems/commit/1b931fc03b819b9a0214be3eaca844ef534175e2 External References: https://www.ruby-lang.org/en/news/2018/02/17/multiple-vulnerabilities-in-rubygems/
Created rubygems tracking bugs for this issue: Affects: fedora-all [bug 1547431]
Statement: This issue affects the versions of rubygems as shipped with Red Hat Subscription Asset Manager 1.x. Red Hat Product Security has rated this issue as having security impact of Moderate. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/. This issue affects the versions of rubygems as shipped with Red Hat Satellite version 6 on Red Hat Enterprise Linux version 5. Red Hat Product Security has rated this issue as having security impact of Moderate. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
This issue has been addressed in the following products: Red Hat Software Collections for Red Hat Enterprise Linux 6 Red Hat Software Collections for Red Hat Enterprise Linux 7 Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS Via RHSA-2018:3729 https://access.redhat.com/errata/RHSA-2018:3729
This issue has been addressed in the following products: Red Hat Software Collections for Red Hat Enterprise Linux 6 Red Hat Software Collections for Red Hat Enterprise Linux 7 Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS Via RHSA-2018:3730 https://access.redhat.com/errata/RHSA-2018:3730
This issue has been addressed in the following products: Red Hat Software Collections for Red Hat Enterprise Linux 7 Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS Via RHSA-2018:3731 https://access.redhat.com/errata/RHSA-2018:3731
> Upstream fix: > > https://github.com/rubygems/rubygems/commit/1b931fc03b819b9a0214be3eaca844ef534175e2 Above rubygems master branch's commit was modified at the additional below commit again. Implement a safe mkdir for package that verifies were inside the destination dir for all new directories ccreated https://github.com/rubygems/rubygems/commit/666ef793cad42eed96f7aee1cdf77865db921099 And this commit is 2nd commit mentioned at CVE-2018-1000079. That means fixing CVE-2018-1000079 is also to fix CVE-2018-1000073. > CVE-2018-1000079 rubygems: Path traversal issue during gem installation allows to write to arbitrary filesystem locations > https://bugzilla.redhat.com/show_bug.cgi?id=1547426#c0 > > Upstream fixes: > > https://github.com/rubygems/rubygems/commit/f83f911e19e27cbac1ccce7471d96642241dd759 > https://github.com/rubygems/rubygems/commit/666ef793cad42eed96f7aee1cdf77865db921099 As a information I investigated, the rubygems repository's commit (666ef793cad42eed96f7aee1cdf77865db921099) is merged to ruby repository's ruby_2_3 branch, but not merged to ruby_2_2 branch. We can see prepared patch file from below page for Ruby 2.2.9 and Ruby 2.3.6. But also the patch for Ruby 2.2.9 does not include the commit(666ef793cad42eed96f7aee1cdf77865db921099). To check it easily, just search by a text "def mkdir_p_safe". > External References: > > https://www.ruby-lang.org/en/news/2018/02/17/multiple-vulnerabilities-in-rubygems/ for Ruby 2.2.9: https://bugs.ruby-lang.org/attachments/download/7030/rubygems-276-for-ruby22.patch = ruby_2_2 branch: https://github.com/ruby/ruby/commit/664b94fd2b4b19edd7d75c6bbcd3154905b2624e for Ruby 2.3.6: https://bugs.ruby-lang.org/attachments/download/7029/rubygems-276-for-ruby23.patch = ruby_2_3 branch: https://github.com/ruby/ruby/commit/08fb5c2153deaee53e481ebe3602fe1d59e256c7
This vulnerability is out of security support scope for the following products: * Red Hat Enterprise Application Platform 5 * Red Hat JBoss Fuse Service Works 6 Please refer to https://access.redhat.com/support/policy/updates/jboss_notes for more details.
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2019:2028 https://access.redhat.com/errata/RHSA-2019:2028
This issue has been addressed in the following products: Red Hat Enterprise Linux 7.5 Extended Update Support Via RHSA-2020:0542 https://access.redhat.com/errata/RHSA-2020:0542
This issue has been addressed in the following products: Red Hat Enterprise Linux 7.4 Advanced Update Support Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions Red Hat Enterprise Linux 7.4 Telco Extended Update Support Via RHSA-2020:0591 https://access.redhat.com/errata/RHSA-2020:0591
This issue has been addressed in the following products: Red Hat Enterprise Linux 7.6 Extended Update Support Via RHSA-2020:0663 https://access.redhat.com/errata/RHSA-2020:0663