| name | T0819_exploit-public-facing-application |
| description | Adversaries may leverage weaknesses to exploit internet-facing software for initial access into an industrial network. |
| category | input-validation |
| version | 18.1 |
| author | cyberstrike-official |
| tags | ["mitre-attack","ics","t0819","initial-access"] |
| technique_id | T0819 |
| tactic | initial-access |
| all_tactics | ["initial-access"] |
| platforms | ["ICS"] |
| mitre_url | https://attack.mitre.org/techniques/T0819 |
| tech_stack | ["ics"] |
| cwe_ids | ["CWE-20"] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
T0819 Exploit Public-Facing Application
High-Level Description
Adversaries may leverage weaknesses to exploit internet-facing software for initial access into an industrial network. Internet-facing software may be user applications, underlying networking implementations, an assets operating system, weak defenses, etc. Targets of this technique may be intentionally exposed for the purpose of remote management and visibility.
An adversary may seek to target public-facing applications as they may provide direct access into an ICS environment or the ability to move into the ICS network. Publicly exposed applications may be found through online tools that scan the internet for open ports and services. Version numbers for the exposed application may provide adversaries an ability to target specific known vulnerabilities. Exposed control protocol or remote access ports found in Commonly Used Port may be of interest by adversaries.
Kill Chain Phase
Platforms: ICS
What to Check
How to Test
Identify Attack Surface
Determine if the target ICS/SCADA environment is susceptible to Exploit Public-Facing Application by examining operational technology systems and network architecture.
Assess Existing Defenses
Review whether mitigations for T0819 are in place. If defenses are absent or misconfigured, this technique may be exploitable in the ICS environment.
Remediation Guide
M0951 Update Software
Regularly scan externally facing systems for vulnerabilities and establish procedures to rapidly patch systems when critical vulnerabilities are discovered through scanning and public disclosure.
M0916 Vulnerability Scanning
Regularly scan externally facing systems for vulnerabilities and establish procedures to rapidly patch systems when critical vulnerabilities are discovered through scanning and public disclosure.
M0950 Exploit Protection
Web Application Firewalls may be used to limit exposure of applications to prevent exploit traffic from reaching the application.
M0926 Privileged Account Management
Use least privilege for service accounts.
