Date: Mon, 22 Jul 2002 14:44:23 -0700
From: [email protected]
To: [email protected], [email protected],
Subject: Security Update: [CSSA-2002-SCO.35] OpenServer 5.0.5 OpenServer 5.0.6 : crontab format string vulnerability
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To: [email protected][email protected][email protected]
______________________________________________________________________________
Caldera International, Inc. Security Advisory
Subject: OpenServer 5.0.5 OpenServer 5.0.6 : crontab format string vulnerability
Advisory number: CSSA-2002-SCO.35
Issue date: 2002 July 22
Cross reference:
______________________________________________________________________________
1. Problem Description
The crontab program contains a format string vulnerability
that can be used by a malicious user to execute code to
gain privilege.
2. Vulnerable Supported Versions
System Binaries
----------------------------------------------------------------------
OpenServer 5.0.5 /etc/cron
/usr/bin/at
/usr/bin/crontab
OpenServer 5.0.6
/etc/cron
/usr/bin/at
/usr/bin/crontab
3. Solution
The proper solution is to install the latest packages.
4. OpenServer 5.0.5
4.1 Location of Fixed Binaries
ftp://ftp.caldera.com/pub/updates/OpenServer/CSSA-2002-SCO.35
4.2 Verification
MD5 (VOL.000.000) = 044edeae4a5db58a5a27078d70bf2060
md5 is available for download from
ftp://ftp.caldera.com/pub/security/tools
4.3 Installing Fixed Binaries
Upgrade the affected binaries with the following commands:
1) Download the VOL* files to the /tmp directory
Run the custom command, specify an install from media images,
and specify the /tmp directory as the location of the images.
5. OpenServer 5.0.6
5.1 Location of Fixed Binaries
ftp://ftp.caldera.com/pub/updates/OpenServer/CSSA-2002-SCO.35
5.2 Verification
MD5 (VOL.000.000) = 044edeae4a5db58a5a27078d70bf2060
md5 is available for download from
ftp://ftp.caldera.com/pub/security/tools
5.3 Installing Fixed Binaries
Upgrade the affected binaries with the following commands:
1) Download the VOL* files to the /tmp directory
Run the custom command, specify an install from media images,
and specify the /tmp directory as the location of the images.
6. References
Specific references for this advisory:
Strategic Reconnaissance Team Security Advisory
(SRT2002-06-04-1611) http://www.snosoft.com
Caldera security resources:
http://www.caldera.com/support/security/index.html
This security fix closes Caldera incidents sr864228, fz520964,
erg712045.
7. Disclaimer
Caldera International, 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 products.
8. Acknowledgements
KF ([email protected]) discovered and researched this
vulnerability.
______________________________________________________________________________
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