Critical NGINX Vulnerability: DoS Risk and Potential RCE — Update Now

Colleagues, I’d like to draw your attention to a critical cybersecurity issue in the NGINX ecosystem.

F5 has reported a heap buffer overflow in the worker process. An unauthenticated attacker can send a specially crafted HTTP request and trigger a worker crash or restart.

In the worst case, if ASLR is disabled or bypassed, there is a risk of remote code execution.

Affected versions include NGINX up to 1.31.2. Fixes are already available in 1.30.4, 1.31.3, and NGINX Plus 37.0.3.1. A temporary workaround is to use named captures, but this is not a complete fix.

Why this matters: this is not only about DoS, but also about the potential takeover of the server.

Have you already checked your NGINX configurations? #cybersecurity #NGINX #vulnerability #AppSec