Executive Summary

Summary
Title New shorewall packages fix firewall bypass
Informations
Name DSA-849 First vendor Publication 2005-10-08
Vendor Debian Last vendor Modification 2005-10-08
Severity (Vendor) N/A Revision 1

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
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Detail

"Supernaut" noticed that shorewall, the Shoreline Firewall, could generate an iptables configuration which is significantly more permissive than the rule set given in the shorewall configuration, if MAC verification are used in a non-default manner.

When MACLIST_DISPOSITION is set to ACCEPT in the shorewall.conf file, all packets from hosts which fail the MAC verification pass through the firewall, without further checks. When MACLIST_TTL is set to a non-zero value, packets from hosts which pass the MAC verification pass through the firewall, again without further checks.

The old stable distribution (woody) is not affected by this problem.

For the stable distribution (sarge) this problem has been fixed in version 2.2.3-2.

For the unstable distribution (sid) this problem has been fixed in version 2.4.1-2.

We recommend that you upgrade your shorewall package.

Original Source

Url : http://www.debian.org/security/2005/dsa-849

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 36

OpenVAS Exploits

Date Description
2008-09-24 Name : Gentoo Security Advisory GLSA 200507-20 (shorewall)
File : nvt/glsa_200507_20.nasl
2008-01-17 Name : Debian Security Advisory DSA 849-1 (shorewall)
File : nvt/deb_849_1.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
18005 Shorewall MACLIST_TTL Authenticated User Ruleset Bypass

Nessus® Vulnerability Scanner

Date Description
2006-01-15 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-197-1.nasl - Type : ACT_GATHER_INFO
2005-10-11 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-849.nasl - Type : ACT_GATHER_INFO
2005-07-22 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200507-20.nasl - Type : ACT_GATHER_INFO
2005-07-21 Name : The remote Mandrake Linux host is missing one or more security updates.
File : mandrake_MDKSA-2005-123.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2014-02-17 11:34:29
  • Multiple Updates