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[CLA-2001:442] Conectiva Linux Security Announcement - wu-ftpd
From: secure () conectiva com br
Date: Thu, 29 Nov 2001 12:20:47 -0200

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CONECTIVA LINUX SECURITY ANNOUNCEMENT 
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PACKAGE   : wu-ftpd
SUMMARY   : Remote vulnerability in the wu-ftpd server
DATE      : 2001-11-29 12:20:00
ID        : CLA-2001:442
RELEVANT
RELEASES  : 5.0, prg graficos, ecommerce, 5.1, 6.0, 7.0

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DESCRIPTION
 "wu-ftpd" is one of the ftp servers available in Conectiva Linux and
 several other linux distributions.
 
 CORE Security Technologies[1] reported[2] a vulnerability[3] in the
 wu-ftpd ftp server that can be exploited remotely. The problem is in
 the internal glob function used by wu-ftpd which allows an attacker
 to corrupt memory space and execute arbitrary code remotely. There is
 no need for an user account on the ftp server, this problem can be
 abused by anonymous users as well.
 This vulnerability was first reported[4] by Matt Power but was deemed
 not exploitable at that time.


SOLUTION
 All administrators who deploy wu-ftpd should upgrade immediately. If
 an upgrade is not possible, then the service should be shut down, or
 another ftp server should be used.
 
 There is no need to restart the service after the upgrade because
 wu-ftpd is started from inetd. The administrator might want to,
 however, shut down all current connections which would still be using
 the vulnerable copy to avoid a possible abuse by currently connected
 users.
 
 
 REFERENCES
 1. http://www.core-sdi.com
 2. http://www.securityfocus.com/archive/1/242964
 3. http://www.securityfocus.com/bid/3581
 4. http://www.securityfocus.com/archive/82/180823


DIRECT DOWNLOAD LINKS TO THE UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/5.0/SRPMS/wu-ftpd-2.6.1-6U50_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/wu-ftpd-2.6.1-6U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/SRPMS/wu-ftpd-2.6.1-6U51_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/wu-ftpd-2.6.1-6U51_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/wu-ftpd-2.6.1-6U60_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/wu-ftpd-2.6.1-6U60_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/wu-ftpd-2.6.1-6U70_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/wu-ftpd-2.6.1-6U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/SRPMS/wu-ftpd-2.6.1-6U50_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/wu-ftpd-2.6.1-6U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/SRPMS/wu-ftpd-2.6.1-6U50_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/wu-ftpd-2.6.1-6U50_1cl.i386.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


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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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