Check Point Advisories

H2O H2O WebServer Heap Buffer Overflow (CVE-2018-0608)

Vulnerability
Protection

Check Point Reference:	CPAI-2019-0202
Date Published:	14 Feb 2019
Severity:	High
Last Updated:	Sunday 03 March, 2019
Source:
Industry Reference:	CVE-2018-0608
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A heap buffer overflow vulnerability has been reported in H2O web server. The Vulnerability is due to insufficient input validation when writing to the access log. A remote, unauthenticated attacker can trigger this vulnerability by sending a crafted message to the target server. Successful exploitation results in arbitrary code execution on the host with privileges of the server process.

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

In the IPS tab, click Protections and find the H2O H2O WebServer Heap Buffer Overflow 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: Web Server Enforcement Violation.
Attack Information: H2O H2O WebServer Heap Buffer Overflow