Date: Tue, 19 Jun 2001 18:08:02 -0300
From: [email protected]
To: [email protected], [email protected],
Subject: [CLA-2001:404] Conectiva Linux Security Announcement - xinetd
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CONECTIVA LINUX SECURITY ANNOUNCEMENT
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PACKAGE : xinetd
SUMMARY : Two security fixes for xinetd
DATE : 2001-06-19 18:07:00
ID : CLA-2001:404
RELEVANT
RELEASES : 6.0
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DESCRIPTION
"xinetd" is an alternative to the inetd superserver.
zen-parse reported on Bugtraq a remote buffer overflow vulnerability
in xinetd that could be used by a remote attacker to execute
arbitrary commands on the server with root privileges.
Another vulnerability that has been corrected with this release is
the umask setting, which previous versions were configuring to zero.
With the umask set to zero, applications started by xinetd could
inadvertently create world writable files if they did not check this
setting before.
The xinetd package is not used by default in Conectiva Linux 6.0,
therefore only users who explicitly changed the configuration of
their services in order to use xinetd will be vulnerable.
SOLUTION
It is recommended that all xinetd users upgrade their packages. This
update will restart the service if it is already running.
REFERENCES
1. http://www.securityfocus.com/bid/2826 (umask)
2. http://www.securityfocus.com/bid/2840 (buffer overflow)
DIRECT DOWNLOAD LINKS TO THE UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/xinetd-2.1.8.9pre15-2U60_2cl.src.rpmftp://atualizacoes.conectiva.com.br/6.0/RPMS/xinetd-devel-2.1.8.9pre15-2U60_2cl.i386.rpmftp://atualizacoes.conectiva.com.br/6.0/RPMS/xinetd-2.1.8.9pre15-2U60_2cl.i386.rpmftp://atualizacoes.conectiva.com.br/6.0/RPMS/xinetd-devel-static-2.1.8.9pre15-2U60_2cl.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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