Nginx.DNS.Resolver.Off-by-One.Heap.Buffer.Overflow

description-logoDescription

This indicates an attack attempt to exploit a Buffer Overflow Vulnerability in nginx HTTP Server.
This is due to an off-by-one error in ngx_resolver_copy() function. A remote attacker can exploit this vulnerability by sending specially crafted packets to the target server. Successful exploitation can lead to Denial-of-Service and likely remote code execution

affected-products-logoAffected Products

nginx HTTP Server 0.6.18 through 1.20.0

Impact logoImpact

System Compromise: Remote attackers can gain control of vulnerable systems.

recomended-action-logoRecommended Actions

Apply the most recent upgrade or patch from the vendor.
http://mailman.nginx.org/pipermail/nginx-announce/2021/000300.html

Telemetry logoTelemetry

Coverage

IPS (Regular DB)
IPS (Extended DB)

Version Updates

Date Version Detail
2021-11-08 18.192 Default_action:pass:drop
2021-10-27 18.186 Sig Added
2021-08-24 18.145