Zero-Day Advisory

Fortinet Discovers G Data Elevation of Privileges Vulnerability

Summary

Fortinet's FortiGuard Labs has discovered an Arbitrary File Write vulnerability in G Data.

G Data is an award-winning Anti-Virus software which uses multiple scanning engines.

An Arbitrary File Write vulnerability has been discovered in G Data by FortiGuard Labs. This vulnerability exists in its file restore mechanism because the vulnerable application fails to verify if the target file is a symbolic link. It could allow malicious users to overwrite any existing file with a malicious one. It's possible to exploit it to achieve elevation of privileges.

Solutions

Users should apply the solution provided by G Data.

Additional Information

The issue is fixed in G Data 25.5.9.25.

Timeline

Fortinet reported the vulnerability to G Data on August 24, 2020.

G Data confirmed the vulnerability on September 3, 2020.

G Data patched the vulnerability on November 2, 2020.

Acknowledgement

This vulnerability was discovered by Ben Hunter of Fortinet's FortiGuard Labs.

IPS Subscription

Fortinet customers who subscribe to Fortinet's intrusion prevention (IPS) service should be protected against this vulnerability with the appropriate configuration parameters in place. Fortinet's IPS service is one component of FortiGuard Subscription Services, which also offer comprehensive solutions such as antivirus, Web content filtering and antispam capabilities. These services enable protection against threats on both application and network layers. FortiGuard Services are continuously updated by FortiGuard Labs, which enables Fortinet to deliver a combination of multi-layered security intelligence and true zero-day protection from new and emerging threats. These updates are delivered to all FortiGate, FortiMail and FortiClient products. Fortinet strictly follows responsible disclosure guidelines to ensure optimum protection during a threat's lifecycle.