[15224] in bugtraq
Caldera Security Advisory CSSA-2000-015: suid root KDE
daemon@ATHENA.MIT.EDU (Caldera Systems Security)
Tue Jun 6 16:14:34 2000
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Date: Tue, 6 Jun 2000 20:26:28 +0200
Reply-To: Caldera Systems Security <security@CALDERASYSTEMS.COM>
From: Caldera Systems Security <security@CALDERASYSTEMS.COM>
To: BUGTRAQ@SECURITYFOCUS.COM
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______________________________________________________________________________
Caldera Systems, Inc. Security Advisory
Subject: kdelibs vulnerability for setuid KDE applications
Advisory number: CSSA-2000-015.0
Issue date: 2000 June, 02
Cross reference:
______________________________________________________________________________
1. Problem Description
There is a very serious vulnerability in the way KDE starts
applications that allows local users to take over any file in the
system by exploiting setuid root KDE application.
The only vulnerable application shipped with OpenLinux is kISDN,
but third party software might be vulnerable too.
There is currently no fix available.
2. Vulnerable Versions
System Package
-----------------------------------------------------------
OpenLinux Desktop 2.3 no vulnerable packages included
OpenLinux eServer 2.3 no vulnerable packages included
and OpenLinux eBuilder
OpenLinux eDesktop 2.4 kISDN
3. Solution
Workaround:
If you do not need kISDN, deinstall it by issuing as root:
rpm -e kisdn
If you need kISDN on a multiuser workstation:
Disable the suid-root sbit by doing as root:
chmod u-s /opt/kde/bin/kisdn
You can still use kisdn by issuing in a terminal window:
$ su -p
Password: <your root password>
# kisdn &
Also check your system for any other KDE application you have
installed from third party sources and remove their suid bits
as shown above.
4. OpenLinux Desktop 2.3
no vulnerable packages included, but third party KDE applications might
be vulnerable.
5. OpenLinux eServer 2.3 and OpenLinux eBuilder for ECential 3.0
no vulnerable packages included, but third party KDE applications might
be vulnerable.
6. OpenLinux eDesktop 2.4
See the workaround above.
7. References
This and other Caldera security resources are located at:
http://www.calderasystems.com/support/security/index.html
This security fix refers to Caldera's internal Problem Report 6806.
8. Disclaimer
Caldera Systems, Inc. is not responsible for the misuse of any of the
information we provide on this website and/or through our security
advisories. Our advisories are a service to our customers intended to
promote secure installation and use of Caldera OpenLinux.
9. Acknowledgements
Caldera Systems wishes to thank Sebastian "Stealth" Krahmer for
discovering and reporting the bug.
______________________________________________________________________________
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