What it is about

NGINX Plus ist die kommerzielle Variante von NGINX, einer Webserver-, Reverse Proxy- und E-Mail Proxy Software. NGINX ist eine Webserver-, Reverse Proxy- und E-Mail-Proxy Software. Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in NGINX Open Source and NGINX Plus ausnutzen, um Sicherheitsvorkehrungen zu umgehen, beliebigen Code auszuführen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand zu verursachen.

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

• Sicherheitsvorkehrungen zu umgehen
• beliebigen Code auszuführen
• Daten zu manipulieren
• vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand zu verursachen

Am I affected?

Affected according to the BSI:

• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• Fedora Linux
• Ubuntu Linux
• Oracle Linux
• SUSE openSUSE
• RESF Rocky Linux
• Gentoo Linux
• NGINX NGINX Plus <37.0.0
• NGINX NGINX Plus <R36 P4
• NGINX NGINX Open Source <1.31.0

and 4 more

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

What helps?

Update to at least:

• NGINX NGINX Plus 37.0.0
• NGINX NGINX Plus R36 P4
• NGINX NGINX Open Source 1.31.0
• NGINX NGINX Open Source 1.30.1
• NGINX NGINX Plus R32 P6

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.