Check Point Advisories

Advantech WebAccess Buffer Overflow (CVE-2019-13556)

Check Point Reference: CPAI-2019-1722
Date Published: 11 Feb 2020
Severity: Critical
Last Updated: Wednesday 04 March, 2020
Source:
Industry Reference:CVE-2019-13556
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? Advantech WebAccess 8.3.5 and prior
Vulnerability Description A stack-based buffer overflow vulnerability exists in Advantech WebAccess. The vulnerability is due to a lack of boundary checks while copying user-supplied data into a stack-based buffer within giffconv.exe. A remote, unauthenticated attacker could exploit this vulnerability by sending a maliciously crafted RPC request to the target server. Successful exploitation could lead to arbitrary code execution under context of the system administrator.

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 R80 / R77 / R75

  1. In the IPS tab, click Protections and find the Advantech WebAccess Buffer Overflow (CVE-2019-13556) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  SCADA Protection Violation.
Attack Information:  Advantech WebAccess Buffer Overflow (CVE-2019-13556)

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