Detections
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Ubuntu 4.10 / 5.04 : shorewall vulnerability (USN-197-1)

high Nessus Plugin ID 20611

Synopsis

The remote Ubuntu host is missing a security-related patch.

Description

A firewall bypass vulnerability has been found in shorewall. If MACLIST_TTL was set to a value greater than 0 or MACLIST_DISPOSITION was set to 'ACCEPT' in /etc/shorewall/shorewall.conf, and a client was positively identified through its MAC address, that client bypassed all other policies/rules in place. This could allow external computers to get access to ports that are intended to be restricted by the firewall policy.

Please note that this does not affect the default configuration, which does not enable MAC based client identification.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected shorewall package.

Plugin Details

Severity: High

ID: 20611

File Name: ubuntu_USN-197-1.nasl

Version: 1.17

Type: local

Agent: unix

Published: 1/15/2006

Updated: 1/19/2021

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:5.04, cpe:/o:canonical:ubuntu_linux:4.10, p-cpe:/a:canonical:ubuntu_linux:shorewall

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Patch Publication Date: 10/10/2005

Vulnerability Publication Date: 7/17/2005

Reference Information

CVE: CVE-2005-2317

USN: 197-1