Date: Mon, 18 Aug 2003 18:51:37 -0300
From: Conectiva Updates <[email protected]>
To: [email protected], [email protected],
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.rpmftp://atualizacoes.conectiva.com.br/9/RPMS/openslp-devel-1.0.11-27287U90_1cl.i386.rpmftp://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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