RHBA-2021:4018 - Bug Fix Advisory

Topic

Updated rhscl/ruby-30-rhel7 container image is now available for Red Hat Software Collections for Red Hat Enterprise Linux 7.

Description

The rhscl/ruby-30-rhel7 container image has been updated for Red Hat Software Collections for Red Hat Enterprise Linux 7 to address the following security advisory: RHSA-2021:3982 (see References)

Users of rhscl/ruby-30-rhel7 container images are advised to upgrade to these updated images, which contain backported patches to correct these security issues, fix these bugs and add these enhancements. Users of these images are also encouraged to rebuild all container images that depend on these images.

You can find images updated by this advisory in Red Hat Container Catalog (see References).

Solution

The Red Hat Software Collections for Red Hat Enterprise Linux 7 container image provided by this update can be downloaded from the Red Hat Container Registry at registry.access.redhat.com. Installation instructions for your platform are available at Red Hat Container Catalog (see References).

Dockerfiles and scripts should be amended either to refer to this new image specifically, or to the latest image generally.

Affected Products

• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7 x86_64
• Red Hat Software Collections (for RHEL Server for System Z) 1 for RHEL 7 s390x
• Red Hat Software Collections (for RHEL Server for IBM Power LE) 1 for RHEL 7 ppc64le

Fixes

• BZ - 1958999 - CVE-2020-36327 rubygem-bundler: Dependencies of gems with explicit source may be installed from a different source
• BZ - 1980126 - CVE-2021-31810 ruby: FTP PASV command response can cause Net::FTP to connect to arbitrary host
• BZ - 1980128 - CVE-2021-32066 ruby: StartTLS stripping vulnerability in Net::IMAP
• BZ - 1980132 - CVE-2021-31799 rubygem-rdoc: Command injection vulnerability in RDoc

CVEs

• CVE-2020-36327
• CVE-2021-31799
• CVE-2021-31810
• CVE-2021-32066

References

• https://access.redhat.com/errata/RHSA-2021:3982
• https://access.redhat.com/containers/?tab=images#/registry.access.redhat.com/rhscl/ruby-30-rhel7