Postfix IPv6 Unauthorized Mail Relay Vulnerability

BID:12445

Info

Postfix IPv6 Unauthorized Mail Relay Vulnerability

Bugtraq ID: 12445
Class: Design Error
CVE: CVE-2005-0337
Remote: Yes
Local: No
Published: Feb 04 2005 12:00AM
Updated: Jul 12 2009 10:06AM
Credit: Discovery is credited to Jean-Samuel Reynaud.
Vulnerable: Wietse Venema Postfix 2.1.3
+ Ubuntu Ubuntu Linux 4.1 ppc
 + Ubuntu Ubuntu Linux 4.1 ia64
 + Ubuntu Ubuntu Linux 4.1 ia32
 SuSE Linux 8.1
SuSE Linux 8.0 i386
SuSE Linux 8.0
S.u.S.E. Linux Personal 9.2
S.u.S.E. Linux Personal 9.1
S.u.S.E. Linux Personal 9.0 x86_64
S.u.S.E. Linux Personal 9.0
S.u.S.E. Linux Personal 8.2
Redhat Enterprise Linux WS 4
Redhat Enterprise Linux ES 4
Redhat Enterprise Linux AS 4
Redhat Desktop 4.0
Not Vulnerable:

Discussion

Postfix IPv6 Unauthorized Mail Relay Vulnerability

Postfix is prone to a vulnerability that allows the application to be abused as a mail relay.

Arbitrary mail may be sent to any MX host with an IPv6 address. This could be exploited by spammers or other malicious parties.

Postfix 2.1.3 is reported prone to this issue. It is possible that other versions are affected as well.

Exploit / POC

Postfix IPv6 Unauthorized Mail Relay Vulnerability

An exploit is not required.

Solution / Fix

Postfix IPv6 Unauthorized Mail Relay Vulnerability

Solution:
Ubuntu has released advisory USN-74-1 to address this issue. Please see the referenced advisory for more information.

SuSE Linux has released a security summary report (SUSE-SR:2005:003) that contains fixes to address this and other vulnerabilities. Customers are advised to peruse the referenced advisory for further information regarding obtaining and applying appropriate updates.

Ubuntu has updated advisory USN-74-1 to USN-74-2 to fix erroneous fixes included in USN-74-1. Please see the referenced advisory for more information.

Red Hat has released advisory RHSA-2005:152-04 to address this issue in Red Hat Enterprise Linux 4. Please see the advisory in Web references for more information.


Wietse Venema Postfix 2.1.3

References

Postfix IPv6 Unauthorized Mail Relay Vulnerability

References:
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