What it is about

Red Hat Enterprise Linux (RHEL) ist eine populäre Linux-Distribution. Ein lokaler Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Daten zu manipulieren und einen Denial-of-Service-Zustand auszulösen.

Under what conditions?

Only with access to the device or an account on it. Often the second step after a phishing email.

What can happen in the worst case

An attacker could use the vulnerability to

• Sicherheitsvorkehrungen zu umgehen
• Daten zu manipulieren
• einen Denial-of-Service-Zustand auszulösen

Am I affected?

Affected according to the BSI:

• Red Hat Enterprise Linux
• Fedora Linux
• RESF Rocky Linux
• Oracle Linux
• Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
• Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
• Red Hat Enterprise Linux 7 Extended Lifecycle Support

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

What helps?

Install the updates provided by the vendor; details in the sources below.

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.