SERVER-WEBAPP -- Snort has detected traffic exploiting vulnerabilities in web based applications on servers.
SERVER-WEBAPP VMware vSphere Client vROPs plugin remote code execution attempt
This rule looks for crafted requests to the VMware vCenter Client "vropspluginui" HTTP endpoint that can lead a directory traversal and remote code execution.
What To Look For
This rule looks for attempts to exploit a directory traversal vulnerability in vRealize Operations Manager Plugin in vCenter Server.
Public information/Proof of Concept available
No known false positives
Cisco Talos Intelligence Group
MITRE ATT&CK Framework
Tactic: Initial Access
Technique: Exploit Public-Facing Application
For reference, see the MITRE ATT&CK vulnerability types here:
A Directory Traversal attack targets HTTP traffic and allows the attacker to access directories outside the applications own, potentially exposing sensitive system files to leakage or overwriting. This is also known as Directory Climbing, Path Traversal, or Backtracking. An alert on this kind of attack indicates a vulnerability in security validation of user input that allows a "traverse to parent directory" or "../" command to pass through. Protect your site by filtering all user input, removing any characters but the allowed data.
CVE Additional Information
CVE-2021-21972The vSphere Client (HTML5) contains a remote code execution vulnerability in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue to execute commands with unrestricted privileges on the underlying operating system that hosts vCenter Server. This affects VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 220.127.116.11).
||Ease of Access||LOW