What it is about

Red Hat Enterprise Linux (RHEL) ist eine populäre Linux-Distribution. Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux ausnutzen, um einen Denial of Service Angriff durchzuführen.

Under what conditions?

Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.

What can happen in the worst case

An attacker could use the vulnerability to

• einen Denial of Service Angriff durchzuführen

Am I affected?

Affected according to the BSI:

• Google Container-Optimized OS
• Amazon Linux 2
• Red Hat Enterprise Linux
• Fedora Linux
• SUSE Linux
• Oracle Linux
• IBM QRadar SIEM
• Red Hat Enterprise Linux Advanced Cluster Management for Kubernetes 2
• SUSE openSUSE
• RESF Rocky Linux
• IBM MQ Operator
• IBM MQ Container

and 26 more

The installed version is usually shown under “Help → About” or in the device’s admin interface.

What helps?

Update to at least:

• Red Hat Enterprise Linux Gatekeeper v3.18.0
• Red Hat Enterprise Linux Gatekeeper v3.15.4
• Red Hat OpenShift Container Platform 4.17.26
• Red Hat OpenShift GitOps 1.15.2
• Red Hat OpenShift Container Platform 4.18.14
• Red Hat OpenShift Container Platform 4.15.51
• Red Hat OpenShift Container Platform 4.14.52
• Red Hat OpenShift for Windows Containers 10.18
• Red Hat OpenShift Container Platform 4.15.52
• Red Hat OpenShift Container Platform 4.17.32
• IBM MQ Operator 3.6.0 CD
• IBM MQ Operator 3.2.13 SC2

Is the vulnerability already being exploited?

None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.