Electron Preload Script Path Validation Bypass in Logseq

Mitigation Strategies

The vulnerability arises from the Electron preload script in Logseq allowing the renderer process to invoke IPC handlers without proper path validation, which can be exploited via JavaScript execution in the renderer (e.g., through XSS or malicious plugins).

Since only version v0.10.15 was tested and confirmed vulnerable and no patch has been released, immediate mitigation steps include avoiding the use of version 0.10.15 or earlier versions until a fix is available.

Additionally, restrict or disable the installation of untrusted or unknown plugins to prevent malicious JavaScript execution.

Useful 0 Not Useful 0

Executive Summary

The vulnerability exists in the Electron preload script used by Logseq. It exposes an API method that allows the renderer process to invoke IPC handlers without proper path validation.

This means that if an attacker can execute JavaScript in the renderer process (for example, through cross-site scripting (XSS) or a malicious plugin), they can exploit this flaw to read, write, or delete arbitrary files on the user's system.

Useful 0 Not Useful 0

Impact Analysis

This vulnerability can have serious impacts because it allows an attacker with JavaScript execution capabilities in the renderer process to manipulate files on your system without restriction.

• An attacker could read sensitive files, potentially exposing private data.
• They could write or modify files, which might lead to data corruption or the introduction of malicious code.
• They could delete important files, causing data loss or application malfunction.

Useful 0 Not Useful 0

Compliance Impact

The vulnerability allows an attacker with JavaScript execution in the renderer process to read, write, or delete arbitrary files on the user's system. This unauthorized access to files could lead to exposure or manipulation of sensitive personal or health data.

Such unauthorized access and potential data compromise may violate data protection requirements under standards and regulations like GDPR and HIPAA, which mandate strict controls over personal and health information confidentiality and integrity.

Useful 0 Not Useful 0