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[CLA-2003:720] Conectiva Security Announcement - lynx
From: Conectiva Updates <secure () conectiva com br>
Date: Mon, 11 Aug 2003 18:48:03 -0300

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CONECTIVA LINUX SECURITY ANNOUNCEMENT 
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PACKAGE   : lynx
SUMMARY   : CRLF injection local vulnerability
DATE      : 2003-08-11 18:47:00
ID        : CLA-2003:720
RELEVANT
RELEASES  : 7.0, 8

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DESCRIPTION
 Lynx is a text terminal based web browser.
 
 Ulf Harnhammar reported[1] a CRLF (Carriage Return, Line Feed)
 injection vulnerability in lynx. When handling a URL supplied through
 the command line, lynx does not filter out characters such as spaces,
 CR, LF, etc, which allows an attacker to inject HTTP headers and
 cause program misbehavior[2] by using a specially crafted URL.
 
 The Common Vulnerabilities and Exposures project (cve.mitre.org) has
 assigned the name CAN-2002-1405 to this issue[3].
 
 The package distributed with Conectiva Linux 9 (lynx-2.8.4-25963cl)
 already contains a fix and is not vulnerable to this problem.


SOLUTION
 All lynx users should upgrade.
 
 
 REFERENCES:
 1.http://marc.theaimsgroup.com/?l=bugtraq&m=102978118411977&w=2
 2.http://marc.theaimsgroup.com/?l=bugtraq&m=103003793418021&w=2
 3.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-1405


UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/lynx-2.8.4-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/lynx-doc-2.8.4-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/lynx-2.8.4-1U70_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/lynx-2.8.4-4U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/lynx-doc-2.8.4-4U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/SRPMS/lynx-2.8.4-4U80_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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