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ESB-2005.0655 -- RHSA-2005:755-01 -- Critical: elm security update

Date: 24 August 2005

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             AUSCERT External Security Bulletin Redistribution

                     ESB-2005.0655 -- RHSA-2005:755-01
                       Critical: elm security update
                              24 August 2005


        AusCERT Security Bulletin Summary

Product:           elm
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux AS/ES/WS 2.1
                   Red Hat Linux Advanced Workstation 2.1
                   UNIX variants
Impact:            Execute Arbitrary Code/Commands
Access:            Remote/Unauthenticated
CVE Names:         CAN-2005-2665

Original Bulletin:

Comment: This advisory references vulnerabilities in products which run on
         platforms other than Red Hat. It is recommended that administrators
         running ELM check for an updated version of the software for their
         operating system.

- --------------------------BEGIN INCLUDED TEXT--------------------

Hash: SHA1

- - ---------------------------------------------------------------------
                   Red Hat Security Advisory

Synopsis:          Critical: elm security update
Advisory ID:       RHSA-2005:755-01
Advisory URL:
Issue date:        2005-08-23
Updated on:        2005-08-23
Product:           Red Hat Enterprise Linux
CVE Names:         CAN-2005-2665
- - ---------------------------------------------------------------------

1. Summary:

An updated elm package is now available that fixes a buffer overflow issue
for Red Hat Enterprise Linux 2.1 AS and AW.

This update has been rated as having critical security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386, ia64
Red Hat Linux Advanced Workstation 2.1 - ia64

3. Problem description:

Elm is a terminal mode email client.

A buffer overflow flaw in Elm was discovered that was triggered by viewing
a mailbox containing a message with a carefully crafted 'Expires' header. 
An attacker could create a malicious message that would execute arbitrary
code with the privileges of the user who received it.  The Common
Vulnerabilities and Exposures project ( has assigned the name
CAN-2005-2665 to this issue.

Users of Elm should update to this updated package, which contains a
backported patch that corrects this issue.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

This update is available via Red Hat Network.  To use Red Hat Network,
launch the Red Hat Update Agent with the following command:


This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

5. Bug IDs fixed (

166580 - CAN-2005-2665 elm buffer overflow

6. RPMs required:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1:

479f0512285ad516895777c2e995a9a7  elm-2.5.6-6.src.rpm

71cba99974d435407927cffd9901eaf9  elm-2.5.6-6.i386.rpm

6272e2c92c5eb207992b60d79c096565  elm-2.5.6-6.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

479f0512285ad516895777c2e995a9a7  elm-2.5.6-6.src.rpm

6272e2c92c5eb207992b60d79c096565  elm-2.5.6-6.ia64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from

7. References:

8. Contact:

The Red Hat security contact is <>.  More contact
details at

Copyright 2005 Red Hat, Inc.

Version: GnuPG v1.2.1 (GNU/Linux)


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