Check Point Advisories

RSYSLOG PRI Value Parsing Integer Overflow Denial of Service (CVE-2014-3683)

Vulnerability
Protection

Check Point Reference:	CPAI-2014-2269
Date Published:	2 Dec 2014
Severity:	High
Last Updated:	Thursday 25 December, 2014
Source:	RSYSLOG
Industry Reference:	CVE-2014-3683
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Infodrom Oldenburg sysklogd prior to 1.5 rsyslog rsyslog prior to 7.6.7 rsyslog rsyslog prior to 8.4.2
Vulnerability Description	A denial of service vulnerability has been reported in rsyslog and sysklogd. The vulnerability is due to an integer overflow when handling PRI values larger than MAX_INT in log messages. A remote, unauthenticated attacker can exploit these vulnerabilities by sending crafted packets to an affected service.

Protection Overview

This protection will detect and block 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 RSYSLOG PRI Value Parsing Integer Overflow Denial of Service 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: Application Servers Protection Violation.
Attack Information: RSYSLOG PRI Value Parsing Integer Overflow Denial of Service