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Category:   Application (Generic)  >   Sudo Vendors:   Miller, Todd C.
(Conectiva Issues Fix) Sudo System Administration Utility May Allow Local Users to Obtain Root Privileges on the Host By Executing Code Via Sendmail
SecurityTracker Alert ID:  1003232
SecurityTracker URL:  http://securitytracker.com/id/1003232
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Jan 15 2002
Impact:   Execution of arbitrary code via local system, Root access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   The SuSE Security Team reported a vulnerability in sudo. A local user may be able to execute code on the host and obtain root privileges.

It is reported that a local user may be able to cause sudo to log failed sudo invocations and execute mail with root privileges while retaining some environment settings. Depending on the mail server that is installed, the local user could execute mail (e.g., sendmail in certain configurations, postfix) with root privileges and execute arbitrary code with root privileges.

Impact:   A local user could obtain root privileges on the host.
Solution:   The vendor has released a fix:

ftp://atualizacoes.conectiva.com.br/5.0/SRPMS/sudo-1.6.4p1-1U50_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/sudo-1.6.4p1-1U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/sudo-doc-1.6.4p1-1U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/SRPMS/sudo-1.6.4p1-1U51_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/sudo-1.6.4p1-1U51_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/sudo-doc-1.6.4p1-1U51_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/sudo-1.6.4p1-1U60_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/sudo-1.6.4p1-1U60_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/sudo-doc-1.6.4p1-1U60_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/sudo-1.6.4p1-1U70_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/sudo-1.6.4p1-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/sudo-doc-1.6.4p1-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/SRPMS/sudo-1.6.4p1-1U50_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/sudo-1.6.4p1-1U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/sudo-doc-1.6.4p1-1U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/SRPMS/sudo-1.6.4p1-1U50_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/sudo-1.6.4p1-1U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/sudo-doc-1.6.4p1-1U50_1cl.i386.rpm

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

Vendor URL:  www.courtesan.com/sudo/ (Links to External Site)
Cause:   Access control error, State error
Underlying OS:   Linux (Conectiva)

Message History:   This archive entry is a follow-up to the message listed below.
Jan 14 2002 Sudo System Administration Utility May Allow Local Users to Obtain Root Privileges on the Host By Executing Code Via Mail Transfer Agent (MTA)



 Source Message Contents

Date:  Tue, 15 Jan 2002 17:50:04 -0200
Subject:  [conectiva-updates] [CLA-2002:451] Conectiva Linux Security Announcement - sudo


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- --------------------------------------------------------------------------
CONECTIVA LINUX SECURITY ANNOUNCEMENT 
- --------------------------------------------------------------------------

PACKAGE   : sudo
SUMMARY   : Local vulnerability allows an attacker to obtain root privileges
DATE      : 2002-01-15 17:21:00
ID        : CLA-2002:451
RELEVANT
RELEASES  : 5.0, prg graficos, ecommerce, 5.1, 6.0, 7.0

- -------------------------------------------------------------------------

DESCRIPTION
 "sudo" is an utility designed to be used by administrators who wish
 to delegate administrative privileges to regular users for very
 specific commands, and without giving away the root password.
 
 Sebastian Krahmer from SuSe found a vulnerability in the sudo package
 which could be used by a local attacker to obtain root privileges.
 Versions prior to and including 1.6.3p7 remove a few potentially
 dangerous environment variables prior to executing a command as root,
 but other variables could be abused and used to obtain root
 privileges. One such scenario is when an unauthorized users attempts
 to execute sudo. This will cause sudo to execute a mailer to send a
 notice to the administrator, which is executed as root and with some
 environment variables specified by the attacker. This has been
 succesfully exploited with the postfix mailer in a default
 configuration, but other mailers and programs could be affected too.
 
 The author has released version 1.6.4 to address this problem. This
 version runs the mail program with a clean environment.


SOLUTION
 It is recommended that all sudo users apply the update.
 
 
 REFERENCES
 1. http://www.securityfocus.com/archive/1/250168
 2.
 http://www.sudo.ws/pipermail/sudo-announce/2002-January/000015.html


DIRECT DOWNLOAD LINKS TO THE UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/5.0/SRPMS/sudo-1.6.4p1-1U50_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/sudo-1.6.4p1-1U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/sudo-doc-1.6.4p1-1U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/SRPMS/sudo-1.6.4p1-1U51_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/sudo-1.6.4p1-1U51_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/sudo-doc-1.6.4p1-1U51_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/sudo-1.6.4p1-1U60_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/sudo-1.6.4p1-1U60_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/sudo-doc-1.6.4p1-1U60_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/sudo-1.6.4p1-1U70_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/sudo-1.6.4p1-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/sudo-doc-1.6.4p1-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/SRPMS/sudo-1.6.4p1-1U50_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/sudo-1.6.4p1-1U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/sudo-doc-1.6.4p1-1U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/SRPMS/sudo-1.6.4p1-1U50_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/sudo-1.6.4p1-1U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/sudo-doc-1.6.4p1-1U50_1cl.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


- -------------------------------------------------------------------------
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
- -------------------------------------------------------------------------
All our advisories and generic update instructions can be viewed at
http://distro.conectiva.com.br/atualizacoes/?idioma=en

- -------------------------------------------------------------------------
subscribe: conectiva-updates-subscribe@papaleguas.conectiva.com.br
unsubscribe: conectiva-updates-unsubscribe@papaleguas.conectiva.com.br
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.6 (GNU/Linux)
Comment: For info see http://www.gnupg.org

iD8DBQE8RIfr42jd0JmAcZARAkYtAKDs9hLi4Q5kNC2lW1ZGRGI92cacngCfRvQn
sUvdktGw9Wy1u61oBTeMfvs=
=b0H3
-----END PGP SIGNATURE-----



 
 


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