CVE-2023-40481 HIGH

CVE-2023-40481: 7-Zip SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

Vendor 7-Zip
Product 7-Zip
Weakness CWE-787
Published May 3, 2024
Last update August 2, 2024

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

7-Zip SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code 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 parsing of SQFS files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-18589.

Key dates

02Disclosure timeline

May 3, 2024 CVE published
August 2, 2024 Record updated