XSS in AstronRPA Desktop Client via LLM Output

Executive Summary

AstronRPA through version 1.1.6 has a cross-site scripting flaw in its desktop client's smart-component chat. This allows remote attackers to execute operating system commands by exploiting unsanitized LLM output rendered via v-html. Attackers can inject prompt content into a web page that causes the model to emit HTML event handlers. These handlers invoke an unrestricted open-path IPC handler with shell metacharacters, executing commands as the desktop user.

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Detection Guidance

To detect this vulnerability, inspect the AstronRPA desktop client's chat functionality for unsanitized HTML output. Check if the application renders AI responses via v-html without proper sanitization. Look for IPC handlers like open-path being exposed to the renderer process. Monitor for unexpected OS command execution traces in logs or system processes.

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Impact Analysis

This vulnerability allows attackers to run arbitrary OS commands on your system if you use AstronRPA desktop client. They could steal data, install malware, or take control of your computer. The attack requires tricking you into visiting a malicious web page or interacting with crafted content.

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Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information. Organizations using AstronRPA may face compliance violations, legal penalties, and reputational damage if exploited.

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Mitigation Strategies

Update AstronRPA to the latest version beyond 1.1.6 to patch the XSS vulnerability in the smart-component chat. Disable HTML rendering in the desktop client if possible or restrict unsanitized LLM output. Monitor for unusual command execution patterns or unauthorized IPC handler invocations.

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