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Date: Tue, 20 Jan 2004 08:53:42 -0200
From: Conectiva Updates <secure@conectiva.com.br>
To: conectiva-updates@papaleguas.conectiva.com.br, lwn@lwn.net,
Subject: [CLA-2004:809] Conectiva Security Announcement - screen

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CONECTIVA LINUX SECURITY ANNOUNCEMENT 
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PACKAGE   : screen
SUMMARY   : Fix for screen vulnerability
DATE      : 2004-01-20 08:53:00
ID        : CLA-2004:809
RELEVANT
RELEASES  : 8, 9

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DESCRIPTION
 Screen[1] is a program which allows the use of several sessions
 inside a single terminal.
 
 Timo Sirainen reported[2] a buffer overflow vulnerability[3] in the
 screen package which could be exploited by an attacker who is able to
 send about 2Gb of data to the user's screen session.
 
 Additionally, a fix for a potential problem with window sizes has
 been incorporated in these updated packages.
 
 Please note that screen is not installed setuid/setgid.


SOLUTION
 It is recommended that all screen users upgrade their packages.
 
 
 REFERENCES
 1. http://www.gnu.org/software/screen/
 2. http://marc.theaimsgroup.com/?l=bugtraq&m=106995837813873&w=2
 3. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0972


UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/8/SRPMS/screen-3.9.10-2U80_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/screen-3.9.10-2U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/SRPMS/screen-3.9.13-24126U90_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/screen-3.9.13-24126U90_1cl.i386.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) 2004 Conectiva Inc.
http://www.conectiva.com

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