Executive Summary

Eclipse Theia versions prior to 1.71.0 have a vulnerability where the AI chat agent processes workspace file and directory names as part of its prompt context without distinguishing them from system instructions.

An attacker can create a malicious repository with specially crafted directory or file names that, when analyzed by the AI agent, cause it to follow attacker-controlled instructions. This is known as an indirect prompt injection.

This vulnerability can lead to attack chains that enable data exfiltration through Markdown image rendering or arbitrary command execution via task definitions.

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Compliance Impact

The provided information does not specify how this vulnerability impacts compliance with common standards and regulations such as GDPR or HIPAA.

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Impact Analysis

This vulnerability can allow attackers to execute arbitrary commands or exfiltrate data by exploiting the AI chat agent's processing of malicious file and directory names.

If you use Eclipse Theia versions prior to 1.71.0, an attacker could leverage this flaw to gain unauthorized access to sensitive information or execute harmful commands within your environment.

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Detection Guidance

Detection of this vulnerability involves identifying if Eclipse Theia versions prior to 1.71.0 are in use, as these versions are affected by the indirect prompt injection issue.

Since the vulnerability arises from the AI chat agent processing workspace file and directory names as part of its prompt context, detection could include checking for suspicious or adversarial directory or file names in repositories used by Theia.

No specific detection commands are provided in the available resources.

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Mitigation Strategies

The primary mitigation step is to upgrade Eclipse Theia to version 1.71.0 or later, where this vulnerability has been addressed.

Until the upgrade is applied, avoid opening untrusted or malicious repositories that may contain adversarial directory or file names which could trigger the vulnerability.

Additionally, be cautious with AI chat features in untrusted workspaces, as these can be exploited in attack chains leading to data exfiltration or arbitrary command execution.

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