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, authentisierter Angreifer kann eine Schwachstelle in NGINX NGINX Plus und NGINX ausnutzen, um Sicherheitsvorkehrungen zu umgehen.

Under what conditions?

Over the network, but only with valid access (login required), for example with stolen credentials or as an insider.

What can happen in the worst case

An attacker could use the vulnerability to

• Sicherheitsvorkehrungen zu umgehen

Am I affected?

Affected according to the BSI:

• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• Fedora Linux
• Ubuntu Linux
• SUSE Linux
• Gentoo Linux
• Hitachi Ops Center
• NGINX NGINX Plus <R33 P2
• NGINX NGINX Plus <R32 P2
• NGINX NGINX OpenSource <1.27.4
• NGINX NGINX OpenSource <1.26.3

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 R33 P2
• NGINX NGINX Plus R32 P2
• NGINX NGINX OpenSource 1.27.4
• NGINX NGINX OpenSource 1.26.3

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.