Dovecot 1.1.x - Invalid Message Address Parsing Denial of Service

Author: anonymous
type: dos
platform: linux
port: 
date_added: 2008-10-30 
date_updated: 2014-03-27 
verified: 1 
codes: CVE-2008-4907;OSVDB-49429 
tags: 
aliases:  
screenshot_url:  
application_url: 

source: https://www.securityfocus.com/bid/31997/info

Dovecot is prone to a remote denial-of-service vulnerability because it fails to handle certain specially crafted email headers.

An attacker can exploit this issue to prevent recipients from accessing their mailboxes.

For an exploit to succeed, the IMAP client connecting to Dovecot must use the FETCH ENVELOPE command.

The issue affects Dovecot 1.1.4 and 1.1.5.

The following invalid message address header is sufficient to trigger this issue:

"From: ("