7-Zip Mark-of-the-Web Bypass Vulnerability
January 19th, 2025
Vulnerability Details
This vulnerability allows remote attackers to bypass the Mark-of-the-Web protection mechanism on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the handling of archived files. When extracting files from a crafted archive that bears the Mark-of-the-Web, 7-Zip does not propagate the Mark-of-the-Web to the extracted files. An attacker can leverage this vulnerability to execute arbitrary code in the context of the current user.
Additional Details
Fixed in 7-Zip version 24.09
Disclosure Timeline
- 2024-10-01 - Vulnerability reported to vendor
- 2025-01-19 - Coordinated public release of advisory
- 2025-01-19 - Advisory Updated
Credit
Peter Girnus - Trend Micro Zero Day Initiative
