Check Point Advisories

7-Zip Integer Underflow (CVE-2023-31102)

Vulnerability
Protection

Check Point Reference:	CPAI-2023-1506
Date Published:	5 Feb 2024
Severity:	High
Last Updated:	Monday 05 February, 2024
Source:
Industry Reference:	CVE-2023-31102
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	7-Zip prior to 22.01
Vulnerability Description	An integer underflow vulnerability exists in 7-Zip. Successful exploitation will result in arbitrary code execution in the context of the logged in user.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the 7-Zip Integer Underflow (CVE-2023-31102) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Content Protection Violation.
Attack Information: 7-Zip Integer Underflow (CVE-2023-31102)