(Conectiva Issues Fix) TWiki Input Validation Hole in Search Function Lets Remote Users Execute Shell Commands
|
|
SecurityTracker Alert ID: 1012896 |
|
SecurityTracker URL: http://securitytracker.com/id/1012896
|
|
CVE Reference:
CAN-2004-1037
(Links to External Site)
|
Date: Jan 14 2005
|
Impact:
Execution of arbitrary code via network, User access via network
|
Fix Available: Yes Vendor Confirmed: Yes
|
Version(s): 20040901 and prior versions
|
Description:
A vulnerability was reported in TWiki. A remote user can execute shell commands on the target system.
Hans Ulrich Niedermann reported that the search function does not validate user-supplied input before executing a command line entry based on the input. A remote user can supply a specially crafted search string to execute arbitrary commands on the target system.
A demonstration exploit search string is provided:
doesnotexist1'; (uname -a; id) | sed 's/\(.*\)/__BEGIN__\1__END__.txt/'; fgrep -i -l -- 'doesnotexist2
The vendor was notified on November 12, 2004.
|
Impact:
A remote user can execute arbitrary shell commands on the target system with the privileges of the target web service.
|
Solution:
Conectiva has released a fix.
ftp://atualizacoes.conectiva.com.br/10/SRPMS/twiki-20040507beta-61534U10_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/10/RPMS/twiki-20040507beta-61534U10_1cl.i386.rpm
|
Vendor URL: twiki.org/cgi-bin/view/Codev/SecurityAlertExecuteCommandsWithSearch (Links to External Site)
|
Cause:
Input validation error
|
Underlying OS:
Linux (Conectiva)
|
|
Message History:
This archive entry is a follow-up to the message listed below.
|
Source Message Contents
|
Date: Fri, 14 Jan 2005 10:51:18 -0200
Subject: [Conectiva-updates] [CLA-2005:918] Conectiva Security Announcement
|
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
- --------------------------------------------------------------------------
CONECTIVA LINUX SECURITY ANNOUNCEMENT
- --------------------------------------------------------------------------
PACKAGE : twiki
SUMMARY : Fix for twiki remote vulnerability
DATE : 2005-01-14 10:51:00
ID : CLA-2005:918
RELEVANT
RELEASES : 10
- -------------------------------------------------------------------------
DESCRIPTION
TWiki[1] is a flexible, powerful, and easy to use enterprise
collaboration platform.
A vulnerability in twiki was found where a remote attacker could
exploit it to run arbitrary shell commands on the server. For further
information on this vulnerability, please, refer to the authors'
announcement[2].
SOLUTION
It is recommended that all twiki users upgrade their packages.
REFERENCES
1.http://www.twiki.org/
2.http://twiki.org/cgi-bin/view/Codev/SecurityAlertExecuteCommandsWithSearch
UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/10/SRPMS/twiki-20040507beta-61534U10_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/10/RPMS/twiki-20040507beta-61534U10_1cl.i386.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 regarding 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
- -------------------------------------------------------------------------
Copyright (c) 2004 Conectiva Inc.
http://www.conectiva.com
- -------------------------------------------------------------------------
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
iD8DBQFB58BF42jd0JmAcZARAhHtAJwKjcPAW688XNjjeRV3uy2eDxtasQCgwcVH
f0WgyxuLOqpy/6GPCspKHv0=
=0n9i
-----END PGP SIGNATURE-----
______________________________________________________________________
subscribe: conectiva-updates-subscribe@papaleguas.conectiva.com.br
unsubscribe: conectiva-updates-unsubscribe@papaleguas.conectiva.com.br
|
|
