Shorewall MACLIST Firewall Rules Bypass Vulnerability

BID:14292

Info

Shorewall MACLIST Firewall Rules Bypass Vulnerability

Bugtraq ID: 14292
Class: Design Error
CVE: CVE-2005-2317
Remote: Yes
Local: No
Published: Jul 18 2005 12:00AM
Updated: Jul 12 2009 04:06PM
Credit: Supernaut <[email protected]> reported this vulnerability to the vendor.
Vulnerable: Ubuntu Ubuntu Linux 5.0 4 powerpc
Ubuntu Ubuntu Linux 5.0 4 i386
Ubuntu Ubuntu Linux 5.0 4 amd64
Ubuntu Ubuntu Linux 4.1 ppc
Ubuntu Ubuntu Linux 4.1 ia64
Ubuntu Ubuntu Linux 4.1 ia32
Shorewall Shorewall 2.4.1
Shorewall Shorewall 2.4 .0
Shorewall Shorewall 2.2.5
Shorewall Shorewall 2.2.4
Shorewall Shorewall 2.2.3
Shorewall Shorewall 2.2.2
Shorewall Shorewall 2.2.1
Shorewall Shorewall 2.2 .0
Shorewall Shorewall 2.0.17
Shorewall Shorewall 2.0.16
Shorewall Shorewall 2.0.15
Shorewall Shorewall 2.0.14
Shorewall Shorewall 2.0.13
Shorewall Shorewall 2.0.12
Shorewall Shorewall 2.0.11
Shorewall Shorewall 2.0.10
Shorewall Shorewall 2.0.9
Shorewall Shorewall 2.0.8
Shorewall Shorewall 2.0.7
Shorewall Shorewall 2.0.6
Shorewall Shorewall 2.0.5
Shorewall Shorewall 2.0.4
Shorewall Shorewall 2.0.3 c
Shorewall Shorewall 2.0.3 b
Shorewall Shorewall 2.0.3 a
Shorewall Shorewall 2.0.3
Shorewall Shorewall 2.0.2
Shorewall Shorewall 2.0.1
+ Mandriva Linux Mandrake 10.0 AMD64
 + Mandriva Linux Mandrake 10.0
Shorewall Shorewall 2.0
Mandriva Linux Mandrake 10.2 x86_64
Mandriva Linux Mandrake 10.2
Mandriva Linux Mandrake 10.1 x86_64
Mandriva Linux Mandrake 10.1
MandrakeSoft Multi Network Firewall 2.0
MandrakeSoft Corporate Server 3.0 x86_64
MandrakeSoft Corporate Server 3.0
Gentoo Linux
Debian Linux 3.1 sparc
Debian Linux 3.1 s/390
Debian Linux 3.1 ppc
Debian Linux 3.1 mipsel
Debian Linux 3.1 mips
Debian Linux 3.1 m68k
Debian Linux 3.1 ia-64
Debian Linux 3.1 ia-32
Debian Linux 3.1 hppa
Debian Linux 3.1 arm
Debian Linux 3.1 amd64
Debian Linux 3.1 alpha
Debian Linux 3.1
Debian Linux 3.0 sparc
Debian Linux 3.0 s/390
Debian Linux 3.0 ppc
Debian Linux 3.0 mipsel
Debian Linux 3.0 mips
Debian Linux 3.0 m68k
Debian Linux 3.0 ia-64
Debian Linux 3.0 ia-32
Debian Linux 3.0 hppa
Debian Linux 3.0 arm
Debian Linux 3.0 alpha
Debian Linux 3.0
Not Vulnerable: Shorewall Shorewall 2.4.2
+ Gentoo Linux

Discussion

Shorewall MACLIST Firewall Rules Bypass Vulnerability

Shorewall is susceptible to a firewall rules bypass vulnerability. This issue is due to a failure of the software to properly implement expected firewall rules for MAC address-based filtering.

This issue arrises when 'MACLIST_TTL' is greater than 0, or 'MACLIST_DISPOSITION' is configured as 'ACCEPT'.

This vulnerability allows attackers to bypass firewall rules, letting them attack protected services and computers without further restriction.

This also issue leads to a false sense of security by firewall administrators.

Exploit / POC

Shorewall MACLIST Firewall Rules Bypass Vulnerability

An exploit is not required.

Solution / Fix

Shorewall MACLIST Firewall Rules Bypass Vulnerability

Solution:
The vendor has provided replacement script files to address this issue. Shorewall 2.4.2 also addresses the issue.

Mandriva advisory MDKSA-2005:123 is available to address this issue. Please see the referenced advisory for more information.

Gentoo Linux has released advisory GLSA 200507-20:02 to address this issue. Users of affected packages are urged to execute the following with superuser privileges:

emerge --sync
emerge --ask --oneshot --verbose net-firewall/shorewall

Please see the referenced advisory for further information.

Debian GNU/Linux has released advisory DSA 849-1, along with fixes to address this issue. Please see the referenced advisory for further information.

Ubuntu has released advisory USN-197-1 to address this issue. Please see the referenced advisory for more information.


Shorewall Shorewall 2.0

Shorewall Shorewall 2.0.1

Shorewall Shorewall 2.0.10

Shorewall Shorewall 2.0.11

Shorewall Shorewall 2.0.12

Shorewall Shorewall 2.0.13

Shorewall Shorewall 2.0.14

Shorewall Shorewall 2.0.15

Shorewall Shorewall 2.0.16

Shorewall Shorewall 2.0.17

Shorewall Shorewall 2.0.2

Shorewall Shorewall 2.0.3 b

Shorewall Shorewall 2.0.3 c

Shorewall Shorewall 2.0.3

Shorewall Shorewall 2.0.3 a

Shorewall Shorewall 2.0.4

Shorewall Shorewall 2.0.5

Shorewall Shorewall 2.0.6

Shorewall Shorewall 2.0.7

Shorewall Shorewall 2.0.8

Shorewall Shorewall 2.0.9

Shorewall Shorewall 2.2 .0

Shorewall Shorewall 2.2.1

Shorewall Shorewall 2.2.2

Shorewall Shorewall 2.2.3

Shorewall Shorewall 2.2.4

Shorewall Shorewall 2.2.5

Shorewall Shorewall 2.4 .0

Shorewall Shorewall 2.4.1

References

Shorewall MACLIST Firewall Rules Bypass Vulnerability

References:

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