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Home » Hacking News » Conectiva CLA-2003:635: Balsa buffer overflow

Conectiva CLA-2003:635: Balsa buffer overflow

by Nikola Strahija on May 5th, 2003 A vulnerability has been found in Balsa versions 1.2 and higher which, if exploited, could crash the mail reader and execute arbitrary commands.


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CONECTIVA LINUX SECURITY ANNOUNCEMENT
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PACKAGE : balsa
SUMMARY : Buffer overflow in the IMAP code
DATE : 2003-04-30 18:44:00
ID : CLA-2003:635
RELEVANT
RELEASES : 9

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DESCRIPTION
Balsa is a GNOME email client. It includes code from mutt, wich is a
text-mode email client.

An update[1] for mutt with a fix for a buffer overflow
vulnerability[2] (CAN-2003-0140) in the code that handles IMAP
folders was released in March 14th, 2003.

The mutt version distributed with Conectiva Linux 9
(mutt-1.5.4-28732cl) is not vulnerable to this issue, but balsa
versions <= 1.2 incorporate the same code from the old mutt, thus
being also vulnerable (Conectiva Linux 9 includes the package
balsa-2.0.9-29085cl).

An attacker who is able to control an IMAP server accessed by balsa
can exploit this vulnerability to remotely crash the client or
execute arbitrary code with the privileges of the user running it.
This update fixes this vulnerability.


SOLUTION
All balsa users should upgrade.

Please note that it is necessary to restart the balsa program (if it
is already running) after the upgrade in order to run the new
installed version.

REFERENCES:
1.http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000626&idioma=en
2.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0140
3.http://distro2.conectiva.com.br/bugzilla/show_bug.cgi?id=8282


UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/9/RPMS/balsa-2.0.9-29086U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/balsa-help-2.0.9-29086U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/SRPMS/balsa-2.0.9-29086U90_1cl.src.rpm


ADDITIONAL INSTRUCTIONS
The apt tool can be used to perform RPM packages upgrades:

- run: apt-get update
- after that, execute: apt-get upgrade

Detailed instructions reagarding the use of apt and upgrade examples
can be found at http://distro.conectiva.com.br/atualizacoes/#apt?idioma=en

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All packages are signed with Conectiva's GPG key. The key and instructions
on how to import it can be found at
http://distro.conectiva.com.br/seguranca/chave/?idioma=en
Instructions on how to check the signatures of the RPM packages can be
found at http://distro.conectiva.com.br/seguranca/politica/?idioma=en

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All our advisories and generic update instructions can be viewed at
http://distro.conectiva.com.br/atualizacoes/?idioma=en

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Copyright (c) 2003 Conectiva Inc.
http://www.conectiva.com

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subscribe: [email protected]
unsubscribe: [email protected]
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