What it is about

Red Hat Enterprise Linux (RHEL) ist eine populäre Linux-Distribution. Ein entfernter, anonymer Angreifer kann eine Schwachstelle 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:

• Debian Linux
• IBM DataPower Gateway
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• IBM Operational Decision Manager
• IBM MQ
• IBM QRadar SIEM
• SUSE openSUSE
• RESF Rocky Linux
• IBM App Connect Enterprise

and 18 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 OpenShift Container Platform 4.14.62
• Red Hat OpenShift Container Platform 4.15.62
• Red Hat OpenShift Container Platform 4.15.64
• Red Hat OpenShift Container Platform 4.20.23
• Red Hat OpenShift Container Platform 4.19.32
• Red Hat OpenShift Container Platform 4.16.63
• Red Hat OpenShift Container Platform 4.18.43
• IBM Storage Scale 5.2.3.8
• IBM Storage Scale 6.0.1.0
• IBM Cognos Analytics 12.1.3 FP2
• IBM Cognos Analytics 12.0.4 FP3
• Splunk SOAR 8.7.0

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.