RHSA-2021:0423 - Security Advisory

Topic

Red Hat OpenShift Container Platform release 4.6.17 is now available with
updates to packages and images that fix several bugs.

This release includes a security update for Red Hat OpenShift Container Platform 4.6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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 4.6.17. See the following advisory for the container images for
this release:

https://access.redhat.com/errata/RHBA-2021:0424

Security Fix(es):

• jenkins: XSS vulnerability in notification bar (CVE-2021-21603)
• jenkins: Improper handling of REST API XML deserialization errors (CVE-2021-21604)
• jenkins: Path traversal vulnerability in agent names (CVE-2021-21605)
• jenkins: Stored XSS vulnerability in button labels (CVE-2021-21608)
• jenkins: Reflected XSS vulnerability in markup formatter preview (CVE-2021-21610)
• jenkins: Stored XSS vulnerability on new item page (CVE-2021-21611)
• ant: insecure temporary file vulnerability (CVE-2020-1945)
• ant: insecure temporary file (CVE-2020-11979)
• jenkins: Arbitrary file read vulnerability in workspace browsers (CVE-2021-21602)
• jenkins: Arbitrary file existence check in file fingerprints (CVE-2021-21606)
• jenkins: Excessive memory allocation in graph URLs leads to denial of service (CVE-2021-21607)
• jenkins: Filesystem traversal by privileged users (CVE-2021-21615)
• jenkins: Missing permission check for paths with specific prefix (CVE-2021-21609)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For OpenShift Container Platform 4.6 see the following documentation, which
will be updated shortly for this release, for important instructions on how
to upgrade your cluster and fully apply this asynchronous errata update:

https://docs.openshift.com/container-platform/4.6/release_notes/ocp-4-6-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.6/updating/updating-cluster-cli.html.

Affected Products

• Red Hat OpenShift Container Platform 4.6 for RHEL 8 x86_64
• Red Hat OpenShift Container Platform 4.6 for RHEL 7 x86_64
• Red Hat OpenShift Container Platform for Power 4.6 for RHEL 8 ppc64le
• Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.6 for RHEL 8 s390x

Fixes

• BZ - 1837444 - CVE-2020-1945 ant: insecure temporary file vulnerability
• BZ - 1903702 - CVE-2020-11979 ant: insecure temporary file
• BZ - 1921322 - CVE-2021-21615 jenkins: Filesystem traversal by privileged users
• BZ - 1925140 - CVE-2021-21608 jenkins: Stored XSS vulnerability in button labels
• BZ - 1925141 - CVE-2021-21609 jenkins: Missing permission check for paths with specific prefix
• BZ - 1925143 - CVE-2021-21605 jenkins: Path traversal vulnerability in agent names
• BZ - 1925145 - CVE-2021-21611 jenkins: Stored XSS vulnerability on new item page
• BZ - 1925151 - CVE-2021-21610 jenkins: Reflected XSS vulnerability in markup formatter preview
• BZ - 1925156 - CVE-2021-21607 jenkins: Excessive memory allocation in graph URLs leads to denial of service
• BZ - 1925157 - CVE-2021-21604 jenkins: Improper handling of REST API XML deserialization errors
• BZ - 1925159 - CVE-2021-21606 jenkins: Arbitrary file existence check in file fingerprints
• BZ - 1925160 - CVE-2021-21603 jenkins: XSS vulnerability in notification bar
• BZ - 1925161 - CVE-2021-21602 jenkins: Arbitrary file read vulnerability in workspace browsers
• BZ - 1925674 - Placeholder bug for OCP 4.6.0 rpm release

CVEs

• CVE-2020-1945
• CVE-2020-11979
• CVE-2021-21602
• CVE-2021-21603
• CVE-2021-21604
• CVE-2021-21605
• CVE-2021-21606
• CVE-2021-21607
• CVE-2021-21608
• CVE-2021-21609
• CVE-2021-21610
• CVE-2021-21611
• CVE-2021-21615

References

• https://access.redhat.com/security/updates/classification/#important