Advisory Details

This vulnerability allows local attackers to escalate privileges on affected installations of Comodo Internet Security Pro. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the update mechanism. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.

11/21/22 – ZDI contacted Comodo and Xcitium support teams asking for their PISRT contact to responsibly disclose the issue
11/21/22 – Xcitium’s support team member advised ZDI to contact Comodo’s Subscriptions team for consumer products assistance
11/22/22 – ZDI sent a PISRT contact requests to Comodo’s Security and Subscriptions teams
06/23/23 – ZDI asked for updates
08/21/23 – ZDI notified the vendor of the intention to publish the cases as 0-day advisory
08/22/23 – Xcitium support team requested the vulnerability details
08/29/23 - ZDI submitted the vulnerability report to Xcitium support team
04/30/24 – ZDI asked for updates
05/01/24 – Xcitium’s support team rejected the report and advised ZDI to resubmit the report Comodo’s GeekBuddy Support team
05/03/24 – ZDI resubmitted the report Comodo’s GeekBuddy Support team
07/12/24 – ZDI asked for updates
07/12/24 - Comodo’s GeekBuddy Support team asked ZDI to submit the false positive file to Comodo’s Malware Analysis team
07/12/24 – ZDI notified the vendor of the intention to publish the cases as 0-day advisory

-- Mitigation: Given the nature of the vulnerability, the only salient mitigation strategy is to restrict interaction with the application.

• 2023-08-29 - Vulnerability reported to vendor
• 2024-07-23 - Coordinated public release of advisory
• 2024-08-15 - Advisory Updated