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Family: SMTP problems --> Category: infos

Courier Mail Server < 0.50.1 Remote Denial Of Service Vulnerability Vulnerability Scan

Vulnerability Scan Summary
Checks version of Courier Mail Server

Detailed Explanation for this Vulnerability Test

Synopsis :

The remote mail server is vulnerable to a denial of service attack.

Description :

The remote host is running Courier Mail Server, an open-source mail
server for Linux and Unix.

According to its banner, the installed version of Courier is prone to
a remote denial of service vulnerability triggered when doing Sender
Policy Framework (SPF) data lookups. To exploit this flaw, an
attacker would need to control a DNS server and return malicious SPF
records in response to queries from the affected application.

Solution :

Upgrade to Courier version 0.50.1 or later.

Threat Level:

Low / CVSS Base Score : 2

Click HERE for more information and discussions on this network vulnerability scan.


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