QID 239937

Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments.This advisory contains the RPM packages for Red Hat OpenShift Container Platform 4.8.22. See the following advisory for the container images for this release:https://access.redhat.com/errata/RHBA-2021:4830 All OpenShift Container Platform 4.8 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift Consoleor the CLI oc command. Instructions for upgrading a cluster are available athttps://docs.openshift.com/container-platform/4.8/updating/updating-cluster-between-minor.html#understanding-upgrade-channels_updating-cluster-between-minor

Security Fix(es): jenkins-2-plugins/subversion: does not restrict the name of a file when looking up a subversion key (CVE-2021-21698)
jenkins: FilePath#mkdirs does not check permission to create parent directories (CVE-2021-21685)
jenkins: File path filters do not canonicalize paths, allowing operations to follow symbolic links to outside allowed directories (CVE-2021-21686)
jenkins: FilePath#untar does not check permission to create symbolic links when unarchiving a symbolic link (CVE-2021-21687)
jenkins: FilePath#reading(FileVisitor)
does not reject any operations allowing users to have unrestricted read access (CVE-2021-21688)
coreos-installer: restrict access permissions on /boot/ignition{,/config.ign} (CVE-2021-3917)
jenkins: FilePath#unzip and FilePath#untar were not subject to any access control (CVE-2021-21689)
jenkins: Agent processes are able to completely bypass file path filtering by wrapping the file operation in an agent file path (CVE-2021-21690)
jenkins: Creating symbolic links is possible without the symlink permission (CVE-2021-21691)
jenkins: The operations FilePath#renameTo and FilePath#moveAllChildrenTo only check read permission on the source path (CVE-2021-21692)
jenkins: When creating temporary files, permission to create files is only checked after they have been created. (CVE-2021-21693)
jenkins: FilePath#toURI, FilePath#hasSymlink, FilePath#absolutize, FilePath#isDescendant, and F

Affected Products:

Red Hat OpenShift Container Platform 4.8 for RHEL 8 x86_64
Red Hat OpenShift Container Platform 4.8 for RHEL 7 x86_64
Red Hat OpenShift Container Platform for Power 4.8 for RHEL 8 ppc64le
Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.8 for RHEL 8 s390x

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

On successful exploitation, it could allow an attacker to execute code.