Postfix IPv6 Relaying Security Issue (CVE-2005-0337)
|Check Point Reference:||CPAI-2012-1330|
|Protection Provided by:||
Who is Vulnerable?
Postfix Project Postfix 2.1.3 to 2.1.4-4
Postfix Project Postfix 2.1.3-1ubuntu17
There is a vulnerability in the way Postfix handles the relaying of e-mail messages A successful attack allows an attacker to use the target Postfix as an open relay to MX hosts with IPv6addresses.
In certain configurations, the vulnerable Postfix becomes an open relay for mail addressed to MX host with IPv6 addresses. An attacker sends a email from untrusted host through a vulnerable Postfix server. The email destinationdomain contains a MX record which has a AAAA (IPv6) record. The email is relayed by the Postfix server, triggering the vulnerability.
This protection will detect and block arbitrary mail ent by the attacker
To configure the defense, select your product from the list below and follow the related protection steps.