bugtraq - [CLA-2003:723] Conectiva Security Announcement

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Message-ID: <200308182151.SAA17602@frajuto.distro.conectiva>
Date: Mon, 18 Aug 2003 18:51:37 -0300
From: Conectiva Updates <secure@...ectiva.com.br>
To: conectiva-updates@...aleguas.conectiva.com.br, lwn@....net,
	bugtraq@...urityfocus.com, security-alerts@...uxsecurity.com,
	linsec@...ts.seifried.org
Subject: [CLA-2003:723] Conectiva Security Announcement - openslp

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CONECTIVA LINUX SECURITY ANNOUNCEMENT 
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PACKAGE   : openslp
SUMMARY   : Temporary file creation vulnerability
DATE      : 2003-08-18 18:49:00
ID        : CLA-2003:723
RELEVANT
RELEASES  : 9

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DESCRIPTION
 OpenSLP[1] is an implementation of the "Service Location Protocol
 V2", an IETF standards track protocol that provides a framework to
 allow networking applications to discover the existence, location,
 and configuration of networked services in enterprise networks.

 There is a symbolic link vulnerability[2] in the initscript used to
 control the openslp daemon. The initscript (/etc/rc.d/init.d/slpd)
 uses '/tmp/route.check' as a temporarily file in an unsafe manner.

 Since the script is usually called by the root user (to start/stop
 the service), an attacker could exploit this vulnerability to at
 least "reset" the content of any file in the system as soon as the
 "start" action is called. As a standard symlink vulnerabilty, all the
 attacker needs is to create a /tmp/route.check symbolic link pointing
 to the target file.

 This update fixes the problem by using a different initscript that
 does not use a temporary file. It is important to note that this
 update brings the latest stable release of openslp: 1.0.11, which
 contains several other fixes and improvements[3].

SOLUTION
 All OpenSLP users should upgrade.

 REFERENCES:
 1.http://www.openslp.org
 2.http://www.securityfocus.com/archive/1/333823
 3.http://sourceforge.net/project/showfiles.php?group_id=1730

UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/9/RPMS/openslp-1.0.11-27287U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/openslp-devel-1.0.11-27287U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/SRPMS/openslp-1.0.11-27287U90_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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