Courier Mail Server < 0.53.2 Crafted Username Encoding DoS

High Nessus Network Monitor Plugin ID 3646

Synopsis

The remote host is vulnerable to a Denial of Service (DoS) attack.

Description

The remote host is running Courier Mail Server, an open source mail server for Linux and Unix. The installed version of Courier is prone to a flaw in the way that it handles malformed 'login' strings. Specifically, an attacker who sends a username that includes a '

Solution

Upgrade to version 0.53.2 or higher.

See Also

http://www.courier-mta.org

Plugin Details

Severity: High

ID: 3646

Family: SMTP Servers

Published: 2006/06/12

Updated: 2019/03/06

Dependencies: 2004, 2005

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.8

Temporal Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

CVSS v3.0

Base Score: 7.5

Temporal Score: 7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:double_precision_incorporated:courier_mta

Exploitable With

Metasploit (TFTP Server for Windows 1.4 ST WRQ Buffer Overflow)

Reference Information

CVE: CVE-2006-2659

BID: 18345