Agent processes are able to completely bypass file path filtering by wrapping the file operation in an agent file path
CVE: CVE-2021-21690
Component: jenkins
CWE: CWE-22
Severity: Important
CVSS v3: 8.9/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Release date: 2021-11-04T14:20:00+00:00

A file path filtering bypass vulnerability was found in Jenkins. Agent processes are able to completely bypass file path filtering by wrapping the file operation in an agent file path. This may allow an attacker who controls the agent process to get read and write access to arbitrary files on the Jenkins controller file system.


Remediation:
Before applying this update, ensure all previously released errata relevant to your system is applied.

See the following documentation, which will be updated shortly for release 3.11.569, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:

https://docs.openshift.com/container-platform/3.11/release_notes/ocp_3_11_release_notes.html

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at
https://access.redhat.com/articles/11258.
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
For OpenShift Container Platform 4.7 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/4.7/release_notes/ocp-4-7-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.7/updating/updating-cluster-cli.html
For OpenShift Container Platform 4.8 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/4.8/release_notes/ocp-4-8-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.8/updating/updating-cluster-cli.html
For OpenShift Container Platform 4.9 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/4.9/release_notes/ocp-4-9-release-notes.html

Details on how to access this content are available at https://docs.openshift.com/container-platform/4.9/updating/updating-cluster-cli.html
Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.