CVE-2024-27516 in livehelperchat
Summary
by MITRE • 02/29/2024
livehelperchat 4.28v is vulnerable to Server-Side Template Injection (SSTI).
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Analysis
by VulDB Data Team • 05/26/2026
Server-Side Template Injection vulnerabilities in livehelperchat 4.28v represent a critical security weakness that allows attackers to execute arbitrary code on the server by manipulating template variables. This vulnerability stems from insufficient input validation and sanitization within the template processing engine, where user-supplied data is directly incorporated into server-side template expressions without proper escaping or filtering mechanisms. The flaw exists primarily in the way the application handles template variables during rendering processes, creating an environment where malicious payloads can be interpreted as executable code rather than simple data.
The technical implementation of this SSTI vulnerability occurs when the application accepts user input through various interface elements such as chat messages, form fields, or API endpoints and subsequently processes this data through template engines without adequate security controls. Attackers can craft malicious payloads that exploit the template injection mechanism to execute system commands, access sensitive files, or escalate privileges within the server environment. This type of vulnerability is classified under CWE-74 as "Improper Neutralization of Special Elements in Output Used by a Downstream Component" and falls under the broader category of CWE-94 "Improper Control of Generation of Code" when the injection leads to arbitrary code execution. The vulnerability can be leveraged to bypass traditional security controls and gain unauthorized access to the underlying system resources.
The operational impact of this SSTI vulnerability in livehelperchat 4.28v is severe and multifaceted, potentially allowing attackers to compromise the entire chat server infrastructure. An attacker could execute arbitrary commands on the server, leading to data breaches, system compromise, or complete server takeover. The vulnerability affects not only the chat functionality but also exposes the underlying operating system and database connections, potentially enabling lateral movement within the network. Additionally, the attack surface extends to any user-facing interface that processes template variables, including admin panels, user registration forms, and chat message processing systems. This vulnerability can be exploited through various attack vectors including direct input manipulation, API endpoint exploitation, and potentially through social engineering techniques that诱导 users to submit malicious payloads.
Mitigation strategies for this SSTI vulnerability in livehelperchat 4.28v require immediate implementation of comprehensive input validation and sanitization measures. Organizations should implement strict template escaping mechanisms that prevent user input from being interpreted as template code, while also applying proper context-aware encoding for all user-supplied data. The recommended approach includes upgrading to the latest version of livehelperchat where the vulnerability has been patched, implementing web application firewalls with template injection detection capabilities, and conducting thorough code reviews to identify similar patterns in other template processing components. Security controls should also include disabling unnecessary template features, implementing strict access controls for template modification, and establishing monitoring systems to detect anomalous template processing patterns. According to ATT&CK framework, this vulnerability maps to T1059.001 "Command and Scripting Interpreter: PowerShell" and T1190 "Exploit Public-Facing Application" techniques, emphasizing the need for both defensive measures and threat hunting activities to prevent exploitation. Organizations should also implement regular security assessments and penetration testing to identify potential template injection points and ensure that all template processing components are properly secured against similar vulnerabilities.