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Neohapsis > Archives > Bugtraq> 2001-10

From: secureconectiva.com.br
Date: Tue Oct 02 2001 - 14:56:40 CDT

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CONECTIVA LINUX SECURITY ANNOUNCEMENT
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PACKAGE : groff
SUMMARY : Multiple vulnerabilities in groff
DATE : 2001-10-02 16:36:00
ID : CLA-2001:428
RELEVANT
RELEASES : 4.0, 4.0es, 4.1, 4.2, 5.0, prg graficos, ecommerce, 5.1, 6.0

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DESCRIPTION
Groff is the GNU version of troff, a document processor that ships
with most Unix systems. Among other functions, it formats system
manual pages into human-readable form.

This release fixes two security problems:

1. ISS X-Force released an advisory[1] about GNU Groff utilities
reading untrusted commands from the current working directory.
Unsuspecting users, including root, could be tricked into running
arbitrary commands on the system.

2. Zenith Parse discovered[2] that the pic command (which is used by
the printer daemon and others) is vulnerable to a format string
attack which makes it possible to circumvent groff's safe mode and
execute commands which would otherwise be disabled.

SOLUTION
All users should upgrade.

REFERENCES
1. http://www.securityfocus.com/cgi-bin/archive.pl?id=1&mid=137588
2. http://www.securityfocus.com/bid/3103

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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subscribe: conectiva-updates-subscribepapaleguas.conectiva.com.br
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