Drupal.PHPMail.Return-Path.Remote.Code.Execution

Description

This indicates an attack attempt to exploit a Remote Code Execution Vulnerability in Drupal Core.
The vulnerability is due to an input validation error when parsing a crafted HTTP request. A remote attacker could exploit this to execute arbitrary code within the context of target application, via a crafted HTTP request.

Affected Products

Drupal 7.xx before 7.60
Drupal 8.6.x before 8.6.2
Drupal 8.x.x before 8.5.8

Impact

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

Recommended Actions

Apply the most recent upgrade or patch from the vendor
https://www.drupal.org/sa-core-2018-006

References