Users login

Create an account »

JOIN XATRIX

Users login

Home » Hacking News » Connectiva CLA-2003:615: samba buffer overrun

Connectiva CLA-2003:615: samba buffer overrun

by Nikola Strahija on April 6th, 2003 A buffer overrun condition has been found in the SMB/CIFS packet fragment re-assembly code of the smbd Samba, which can allow remote attacker to gain root privileges.


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- --------------------------------------------------------------------------
CONECTIVA LINUX SECURITY ANNOUNCEMENT
- --------------------------------------------------------------------------

PACKAGE : samba
SUMMARY : Remote vulnerability and local race condition
DATE : 2003-04-04 16:00:00
ID : CLA-2003:615
RELEVANT
RELEASES : 6.0, 7.0, 8

- -------------------------------------------------------------------------

DESCRIPTION
Samba provides SMB/CIFS services (such as file and printer sharing)
used by clients compatible with Microsoft Windows(TM).

The SuSE Security Team performed a security audit in parts of the
Samba project code and found various problems in both the client and
server implementations. Among these problems is a buffer overflow[1]
vulnerability in the packet fragment re-assembly code. A remote
attacker who is able to connect to the samba server may gain root
privileges on it by exploiting this vulnerability.

The vulnerability also affects the client library code, thus it is
possible to exploit applications which use samba library functions by
using a malicious samba server to send traffic to them.

Additionally, a race condition[2] was discovered which could allow a
local attacker to overwrite critical system files.

In Conectiva Linux versions 7.0 and 8 samba is being upgraded to the
latest stable version: 2.2.8. This version fixes the above
vulnerabilities and includes several other fixes and additional
features[3]. In Conectiva Linux 6.0, a patch with fixes the above
vulnerabilities was applied to the package originally distributed,
keeping samba in its original version (2.0.9).


SOLUTION
All samba users should upgrade their packages immediately. This
update will automatically restart the samba service if it is already
running.


REFERENCES:
1.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0085
2.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0086
3.http://www.samba.org/samba/whatsnew/samba-2.2.8.html


UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/samba-2.0.9-2U60_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/samba-clients-2.0.9-2U60_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/samba-doc-2.0.9-2U60_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/samba-swat-2.0.9-2U60_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/samba-2.0.9-2U60_3cl.src.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/samba-2.2.8-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/samba-clients-2.2.8-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/samba-codepagesource-2.2.8-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/samba-common-2.2.8-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/samba-doc-2.2.8-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/samba-swat-2.2.8-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/samba-2.2.8-1U70_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/samba-2.2.8-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/samba-clients-2.2.8-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/samba-codepagesource-2.2.8-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/samba-common-2.2.8-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/samba-doc-2.2.8-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/samba-swat-2.2.8-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/SRPMS/samba-2.2.8-1U80_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

- -------------------------------------------------------------------------
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

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

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

- -------------------------------------------------------------------------
subscribe: [email protected]
unsubscribe: [email protected]
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.6 (GNU/Linux)
Comment: For info see http://www.gnupg.org

iD8DBQE+jdjJ42jd0JmAcZARAi+FAKDzpLt7tf+Yi+Py3qoloXH7cWPmRwCg47NF
kFNcMNrJy3FuMczqvmWFg7E=
=C7qa
-----END PGP SIGNATURE-----


Newsletter signup

Signup to our monthly newsletter and stay in touch with IT news!

Free E-books

We've got ebooks! But they're not online. :( Please give us a few days to bring downloads back.

Contact

Have something to say or just wanna drop us a line? Please keep this in mind: to spam, we reply with spam.

Contact us »