Rule Document 1:62516

Rule Category

SERVER-OTHER -- Snort has detected traffic exploiting vulnerabilities in a server in the network.

Alert Message

SERVER-OTHER Rockwell Automation ThinManager Thinserver directory traversal attempt

Rule Explanation

This rule detects a directory traversal sequence within the payload of ThinManager Thinserver messages sent to the server. Successful exploitation could allow an attacker to access or overwrite files outside the intended directory on the target system.

What To Look For

This rule fires on attempts to exploit a directory traversal vulnerability in Rockwell Automation ThinManager Thinserver.

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

Rule Groups

MITRE::ATT&CK Framework::Enterprise::Initial Access::Exploit Public-Facing Application

Adversaries may attempt to take advantage of a weakness in an Internet-facing computer or program using software, data, or commands in order to cause unintended or unanticipated behavior. The weakness in the system can be a bug, a glitch, or a design vulnerability. These applications are often websites, but can include databases (like SQL), standard services (like SMB or SSH), network device administration and management protocols (like SNMP and Smart Install), and any other applications with Internet accessible open sockets, such as web servers and related services.

Vulnerability::Severity::High

Vulnerability::Severity::Critical

Rule Categories::Server::Other

CVE

CVE-2023-27855

Rule Vulnerability

Directory Traversal

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

This product uses data from the NVD API but is not endorsed or certified by the NVD.

CVE-2023-27855

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