Envoy.HTTP.Headers.DoS

description-logoDescription

This indicates an attack attempt to exploit a Denial of Service Vulnerability in Envoy.
A remote, unauthenticated attacker can exploit this vulnerability by sending many requests with a large number of small headers. Successful exploitation results in excessive CPU usage on the target system, leading to denial of service conditions.

affected-products-logoAffected Products

Envoy Envoy 1.10.0 through 1.11.1

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://github.com/envoyproxy/envoy/issues/8520

Telemetry logoTelemetry

Coverage

IPS (Regular DB)
IPS (Extended DB)

Version Updates

Date Version Detail
2019-11-29 15.736 Default_action:pass:drop
2019-11-20 15.727