Nginx.0-Length.Headers.Leak.DoS

description-logoDescription

This indicates an attack attempt to exploit a Denial of Service Vulnerability in nginx HTTP Server.
A remote, unauthenticated attacker can exploit this vulnerability on a vulnerable version of Nginx server. By sending a continuous steam of HTTP/2 HEADERS and/or CONTINUATION frames, the attacker can cause a significant resource exhaustion on the target server, and leading to a potential denial-of-service condition especially if a distributed network of source machines are employed.

affected-products-logoAffected Products

nginx HTTP Server prior to 1.16.1
nginx HTTP Server prior to 1.17.3

Impact logoImpact

Denial of Service: Remote attackers can crash vulnerable systems.

recomended-action-logoRecommended Actions

Apply the most recent upgrade or patch from the vendor.
https://www.nginx.com/blog/nginx-updates-mitigate-august-2019-http-2-vulnerabilities/

Telemetry logoTelemetry

Coverage

IPS (Regular DB)
IPS (Extended DB)

Version Updates

Date Version Detail
2023-11-07 26.672 Sig Added
2019-10-23 14.709 Default_action:pass:drop
2019-09-26 14.695