7-Zip Mark-of-the-Web Bypass Vulnerability

January 19th, 2025
ZDI-25-045 ZDI-CAN-25456

CVE ID

CVE-2025-0411

CVSS Score

7.0 AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors

7-Zip

Affected Products

7-Zip

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

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