Check Point Advisories

Zeroshell type Parameter Command Execution (CVE-2009-0545)

Check Point Reference: CPAI-2009-0537
Date Published: 27 Apr 2021
Severity: High
Last Updated: 27 Apr 2021
Source:
Industry Reference:CVE-2009-0545
Protection Provided by:

Security Gateway
R80, R77, R75

Who is Vulnerable? ZeroShell 1.0beta11 and prior
Vulnerability Description ZeroShell is a small Linux distribution for servers and embedded devices. A vulnerability exists in Zeroshell that could be exploited by remote attackers to compromise a vulnerable system. The vulnerability is due to an input validation error in the "cgi-bin/kerbynet" script that does not validate the "type" parameter before being passed as an argument to a command-line. Remote attackers could exploit this to execute arbitrary commands via shell metacharacters in the "type" parameter in a NoAuthREQ x509List action.

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 Zeroshell type Parameter Command Execution (CVE-2009-0545) 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:  Web Server Enforcement Violation.
Attack Information:  Zeroshell type Parameter Command Execution (CVE-2009-0545)

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