Check Point Advisories

Adobe Acrobat and Reader Integer Underflow (APSB23-24: CVE-2023-26421)

Vulnerability
Protection

Check Point Reference:	CPAI-2023-0211
Date Published:	11 Apr 2023
Severity:	High
Last Updated:	Tuesday 11 April, 2023
Source:	Adobe APSB23-24
Industry Reference:	CVE-2023-26421
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Acrobat and Reader 23.001.20093 Acrobat and Reader 20.005.30441 and earlier
Vulnerability Description	An integer underflow vulnerability exists in Adobe Acrobat and Reader. Successful exploitation will result in arbitrary code execution in the context of the logged in user.
Update/Patch Avaliable	Apply patches from: APSB23-24

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 Adobe Acrobat and Reader Integer Underflow (APSB23-24: CVE-2023-26421) 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: Adobe Reader Violation.
Attack Information: Adobe Acrobat and Reader Integer Underflow (APSB23-24: CVE-2023-26421)