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RedHat: 'elm' buffer overflow vulnerability Print E-mail
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Posted by LinuxSecurity.com Team   
RedHat Linux Elm had a buffer overflow when handling very long message-ids. Thisoverwrote other header fields, and could potentially cause more damage.

---------------------------------------------------------------------
                   Red Hat, Inc. Red Hat Security Advisory

Synopsis:          New elm packages available for Red Hat Linux 5.2, 6.2, 7 and 7.1
Advisory ID:       RHSA-2001:091-07
Issue date:        2001-07-03
Updated on:        2001-07-16
Product:           Red Hat Linux
Keywords:          
Cross references:  
Obsoletes:         
---------------------------------------------------------------------

1. Topic:

New elm packages are available for Red Hat Linux 5.2, 6.2, 7 and 7.1. These
packages fix a buffer overflow in the message-id handling.

2. Relevant releases/architectures:

Red Hat Linux 5.2 - alpha, i386, sparc

Red Hat Linux 6.2 - alpha, i386, sparc

Red Hat Linux 7.0 - alpha, i386

Red Hat Linux 7.1 - i386, ia64

3. Problem description:

Elm had a buffer overflow when handling very long message-ids. This
overwrote other header fields, and could potentially cause more damage.
Note that Red Hat Linux 7.1/Alpha shipped with this newer version.

4. Solution:

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

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade.  Only those
RPMs which are currently installed will be updated.  Those RPMs which are
not installed but included in the list will not be updated.  Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
desired RPMs.

Please note that this update is also available via Red Hat Network.  Many
people find this an easier way to apply updates.  To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

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

5. Bug IDs fixed  (http://bugzilla.Red Hat.com/bugzilla for more info):

44025 - elm buffer overflow on messages with long Message-ID header

6. RPMs required:

Red Hat Linux 5.2:

SRPMS: 
ftp://updates.Red Hat.com/5.2/en/os/SRPMS/elm-2.5.5-0.52.src.rpm

alpha: 
ftp://updates.Red Hat.com/5.2/en/os/alpha/elm-2.5.5-0.52.alpha.rpm

i386: 
ftp://updates.Red Hat.com/5.2/en/os/i386/elm-2.5.5-0.52.i386.rpm

sparc: 
ftp://updates.Red Hat.com/5.2/en/os/sparc/elm-2.5.5-0.52.sparc.rpm

Red Hat Linux 6.2:

SRPMS: 
ftp://updates.Red Hat.com/6.2/en/os/SRPMS/elm-2.5.5-0.62.src.rpm

alpha: 
ftp://updates.Red Hat.com/6.2/en/os/alpha/elm-2.5.5-0.62.alpha.rpm

i386: 
ftp://updates.Red Hat.com/6.2/en/os/i386/elm-2.5.5-0.62.i386.rpm

sparc: 
ftp://updates.Red Hat.com/6.2/en/os/sparc/elm-2.5.5-0.62.sparc.rpm

Red Hat Linux 7.0:

SRPMS: 
ftp://updates.Red Hat.com/7.0/en/os/SRPMS/elm-2.5.5-1.src.rpm

alpha: 
ftp://updates.Red Hat.com/7.0/en/os/alpha/elm-2.5.5-1.alpha.rpm

i386: 
ftp://updates.Red Hat.com/7.0/en/os/i386/elm-2.5.5-1.i386.rpm

Red Hat Linux 7.1:

SRPMS: 
ftp://updates.Red Hat.com/7.1/en/os/SRPMS/elm-2.5.5-1.src.rpm

i386: 
ftp://updates.Red Hat.com/7.1/en/os/i386/elm-2.5.5-1.i386.rpm

ia64: 
ftp://updates.Red Hat.com/7.1/en/os/ia64/elm-2.5.5-1.ia64.rpm



7. Verification:

MD5 sum                           Package Name
--------------------------------------------------------------------------
75daf2932db42b69a9619002ffc4d36b 5.2/en/os/SRPMS/elm-2.5.5-0.52.src.rpm
6d8a54bebc078adbbb27863d359f3fe7 5.2/en/os/alpha/elm-2.5.5-0.52.alpha.rpm
e939d9f97b035a373a7f56af1e7aad0a 5.2/en/os/i386/elm-2.5.5-0.52.i386.rpm
abdf47c3a05c4e363e40b0d12c76cbc0 5.2/en/os/sparc/elm-2.5.5-0.52.sparc.rpm
533bc2f830af5f153e7f127bfc1a179a 6.2/en/os/SRPMS/elm-2.5.5-0.62.src.rpm
5fc1a845b62174ade41c657aa9d3957c 6.2/en/os/alpha/elm-2.5.5-0.62.alpha.rpm
770b3e8080e8f24d0e6efbe346e7a0a2 6.2/en/os/i386/elm-2.5.5-0.62.i386.rpm
8c26e7c6062ef42813565d5a2fb516b4 6.2/en/os/sparc/elm-2.5.5-0.62.sparc.rpm
0528d7629e47f0bc6c2174b6b31db9c6 7.0/en/os/SRPMS/elm-2.5.5-1.src.rpm
0bb0cad648eb28f4158ce4c1af80951e 7.0/en/os/alpha/elm-2.5.5-1.alpha.rpm
2ee810da56eac2d3bffa73a5c786451d 7.0/en/os/i386/elm-2.5.5-1.i386.rpm
0528d7629e47f0bc6c2174b6b31db9c6 7.1/en/os/SRPMS/elm-2.5.5-1.src.rpm
2ee810da56eac2d3bffa73a5c786451d 7.1/en/os/i386/elm-2.5.5-1.i386.rpm
d753013a2b6643a813f65090a036d02d 7.1/en/os/ia64/elm-2.5.5-1.ia64.rpm

These packages are GPG signed by Red Hat, Inc. for security.  Our key
is available at:
     http://www.Red Hat.com/corp/contact.html

You can verify each package with the following command:
    rpm --checksig  

If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
    rpm --checksig --nogpg 

8. References:




Copyright(c) 2000, 2001 Red Hat, Inc.

 
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