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Security bugfix for CYRUS-IMAPD

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(Last modified: 22FEB2002)


solutions Security bugfix for CYRUS-IMAPD SuSE Linux Maintenance Web (b75da32c90725fcba420dc2e7499b65f)

Applies to

Product(s): SuSE eMail Server III
SuSE Linux Enterprise Server 7 for IA32
SuSE Linux Enterprise Server 7 for IA64
SuSE Linux Enterprise Server 7 for S/390 and zSeries
SuSE Linux Connectivity Server

Package: cyrus-imapd
Release: 20020222
Obsoletes: none

Indications

This update should be installed on systems running Cyrus IMAPD.

Contraindications

None.

Problem description

When a user is logging in via IMAP (Internet Message Access Protocol) and added trailing or leading whitespaces to his UID (User ID), a new IMAP user and an INBOX will be created by many mail clients.
As a result of a wrong patch applied by SuSE it is possible to login on the IMAP daemon as an anonymous user even if anonymous login is switched off. The anonymous user may add folders and fill them up to the global quota, leaving the service potentially vulnerable to denial of service attacks. He may also access shared folders that have insufficient access control without authentication.

Solution

Please install the updates provided at the location noted below.

Installation notes

This update is provided as an RPM package that can be downloaded from the links below. For installation please follow these instructions:
  1. Stop the Cyrus IMAPD rccyrus stop
  2. Install the provided RPM package rpm -Uhv cyrus-imapd.rpm
  3. Start the Cyrus IMAPD rccyrus start

links to download packages

Download Source Packages

Download the source code of the patches for maintained products.


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