Date: Fri, 3 Oct 2003 15:41:52 -0300
From: Conectiva Updates <secure@conectiva.com.br>
To: conectiva-updates@papaleguas.conectiva.com.br, lwn@lwn.net,
Subject: [CLA-2003:758] Conectiva Security Announcement - vixie-cron
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CONECTIVA LINUX SECURITY ANNOUNCEMENT
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PACKAGE : vixie-cron
SUMMARY : Problem with the use of cron.allow and cron.deny
DATE : 2003-10-03 15:41:00
ID : CLA-2003:758
RELEVANT
RELEASES : 7.0, 9
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DESCRIPTION
The vixie-cron package contains the Vixie version of cron. Cron is a
standard UNIX daemon that runs specified programs at scheduled
times.
This update fixes a problem[1] introduced by a previous vixie-cron
security advisory[2] (CLSA-2003:628) which, besides a fix for a local
vulnerability, contained the following:
"[...] fix for a problem regarding a leak of read-only file
descriptors of the /etc/cron.allow and /etc/cron.deny files to the
users' text editor during crontab modifications. Although these files
are not distributed with Conectiva Linux, the system administrator
can create them to restrict access to the cron service."
The patch originally used to fix this issue contains an error that
breaks the cron.allow/cron.deny usage, causing a crash of the crontab
program if there is more than one user listed in these files.
Packages for Conectiva Linux 9, although not released by that update,
contain the same patch and are being fixed as well. The packages for
Conectiva Linux 8 did not contain the patches (see the CLSA-2003:757
announcement[3]) and therefore are not affected by this issue.
SOLUTION
All users are advised to upgrade.
REFERENCES:
1.http://distro.conectiva.com.br/bugzilla/show_bug.cgi?id=9461
2.http://distro.conectiva.com.br/atualizacoes/index.php?id=a&anuncio=000628&idioma=en
3.http://distro.conectiva.com.br/atualizacoes/index.php?id=a&anuncio=000757&idioma=en
UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/vixie-cron-3.0.1-50U70_2cl.i386.rpmftp://atualizacoes.conectiva.com.br/7.0/SRPMS/vixie-cron-3.0.1-50U70_2cl.src.rpmftp://atualizacoes.conectiva.com.br/9/RPMS/vixie-cron-3.0.1-27403U90_1cl.i386.rpmftp://atualizacoes.conectiva.com.br/9/SRPMS/vixie-cron-3.0.1-27403U90_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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