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Conectiva Linux Advisory: samba

Nov 25, 2002, 16:33 (0 Talkback[s])

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

PACKAGE   : samba
SUMMARY   : Buffer overflow vulnerability
DATE      : 2002-11-22 16:13:00
ID        : CLA-2002:550
RELEVANT
RELEASES  : 6.0, 7.0, 8

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

DESCRIPTION
 Samba is a server that provides SMB services such as file and printer
 sharing for other SMB clients, such as Windows(R).
 
 Steve Langasek and Eloy Paris discovered a vulnerability in Samba
 versions 2.2.2 to 2.2.6 which may allow a remote attacker to execute
 arbitrary code in the server context. The vulnerability, which is a
 buffer overflow in a function used to decrypt hashed passwords, can
 be exploited by an attacker when authenticating a valid account in
 the samba server. In order to sucessfully run arbitrary code, the
 overflow must be crafted such that converting a DOS codepage string
 to little endian UCS2 unicode translates into an executable block of
 code.
 
 This update also adds other fixes for potential buffer overflows from
 samba 2.2.7 that are not part of the standard patch supplied by the
 samba authors in their announcement[1]. The samba package distributed
 in Conectiva Linux 6.0 (samba-2.0.9) is not vulnerable to the
 announced buffer overflow, but it is being upgraded with these
 aditional fixes.


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://us1.samba.org/samba/whatsnew/samba-2.2.7.html


DIRECT DOWNLOAD LINKS TO THE UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/samba-2.0.9-2U60_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/samba-clients-2.0.9-2U60_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/samba-doc-2.0.9-2U60_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/samba-swat-2.0.9-2U60_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/samba-2.0.9-2U60_2cl.src.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/samba-2.2.1a-1U70_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/samba-clients-2.2.1a-1U70_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/samba-codepagesource-2.2.1a-1U70_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/samba-common-2.2.1a-1U70_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/samba-doc-2.2.1a-1U70_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/samba-swat-2.2.1a-1U70_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/samba-2.2.1a-1U70_2cl.src.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/samba-2.2.3a-2U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/samba-clients-2.2.3a-2U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/samba-codepagesource-2.2.3a-2U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/samba-common-2.2.3a-2U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/samba-doc-2.2.3a-2U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/samba-swat-2.2.3a-2U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/SRPMS/samba-2.2.3a-2U80_1cl.src.rpm


ADDITIONAL INSTRUCTIONS
 Users of Conectiva Linux version 6.0 or higher may use apt to perform 
 upgrades of RPM packages:
 - add the following line to /etc/apt/sources.list if it is not there yet
   (you may also use linuxconf to do this):

 rpm [cncbr] ftp://atualizacoes.conectiva.com.br 6.0/conectiva updates

(replace 6.0 with the correct version number if you are not running CL6.0)

 - 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