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CSSA-2002-SCO.35.txt

CSSA-2002-SCO.35.txt
Posted Jul 24, 2002
Authored by Caldera | Site caldera.com

Caldera security advisory CSSA-2002-SCO.35 - A format string vulnerability found in the crontab utility can allow local users to gain root level privileges. This issue affects Caldera OpenServer 5.0.5 and OpenServer 5.0.6 .

tags | local, root
SHA-256 | 4b6d1da615ec1c788d6aa26337d81d1fef020b841d6c3833d41e806acfb24350

CSSA-2002-SCO.35.txt

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______________________________________________________________________________

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 (dotslash@snosoft.com) discovered and researched this
vulnerability.

______________________________________________________________________________

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