Local Privilege Escalation in Foxit PDF Editor

Executive Summary

This is a local privilege escalation vulnerability in Foxit PDF Editor/Reader caused by insecure permissions in the update daemon. A regular user can modify a configuration file, which may lead to running arbitrary scripts with elevated privileges.

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Detection Guidance

Check file permissions of Foxit PDF Editor/Reader configuration files. Look for files writable by regular users in directories like /etc/foxit/ or user home directories. Use commands like 'find / -path /proc -prune -o -type f -perm -022 -print' to find world-writable files. Verify if the update daemon's config file is modifiable by non-root users.

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Impact Analysis

An attacker with local access could exploit this to gain higher system privileges, potentially allowing them to install malware, access sensitive data, or perform unauthorized actions on your system.

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Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by allowing unauthorized privilege escalation, which may lead to unauthorized access to sensitive data. If exploited, it could result in data breaches or unauthorized modifications, violating confidentiality and integrity requirements under these regulations.

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Mitigation Strategies

Immediately restrict write permissions on the Foxit PDF Editor/Reader configuration file to prevent unauthorized modifications. Ensure only privileged users can alter it. Monitor for unusual script execution or privilege changes in the update daemon process.

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