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Security update for package cyrus-imapd

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(Last modified: 25NOV2004)


solutions Security update for package cyrus-imapd SuSE Linux Maintenance Web (a67c0b43e3aee4dbdad233f310f8c6e5)

Applies to

Package: cyrus-imapd
Product(s): SUSE CORE 9 for x86
SUSE CORE 9 for Itanium Processor Family
SUSE CORE 9 for IBM POWER
SUSE CORE 9 for IBM S/390 31bit
SUSE CORE 9 for IBM zSeries 64bit
SUSE CORE 9 for AMD64 and Intel EM64T
Patch: patch-9510
Release: 20041125
Obsoletes: none

Indications

Everyone using the Cyrus IMAP Server should install this security update.

Contraindications

None.

Problem description

A security audit of the Cyrus IMAP server performed by Stefan Esser revealed a remotely exploitable heap overflow. The vulnerability potentially can be abused by an attacker to run untrusted code as the user cyrus-imapd is running as (usually "cyrus".) This update fixes the vulnarbility.
The following bugs also have been found and fixed with this update:
  • Reconstruct was not able to reconstruct mailbox header files if they were completely missing.
  • Fixes for the sieve vacation functionality. Existing sieve scripts must be recompiled when installing this update, e.g. by using the tool masssievec. These commands can be used to do that: find /var/lib/sieve -name "*.bc" | xargs rm -v<br /> su - cyrus -c '/usr/share/doc/packages/cyrus-imapd/tools/masssievec /usr/lib/cyrus/bin/sievec' It is recommended to create a backup of /var/lib/sieve first.
  • Backported from recent Cyrus IMAP server versions:
    • Vacation addresses are now handled case insensitive.
    • Added precedence "junk | bulk | list" handling for vacation

Solution

Please install the update provided at the location noted below.

Installation notes

This update is provided as an RPM package that can easily be installed onto a running system by using these commands:
rccyrus stop<br/> rpm -Uvh cyrus-imapd.rpm<br/> # recompile sieve scripts as shown above<br/> rccyrus start

links to download packages

Download Source Packages

Download the source code of the patches for maintained products.


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