To: bugtraq@securityfocus.com security-announce@lists.securityportal.com announce@lists.caldera.com
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Caldera International, Inc. Security Advisory
Subject: OpenServer: vi /tmp vulnerability
Advisory number: CSSA-2001-SCO.17
Issue date: 2001 September 19
Cross reference:
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1. Problem Description
The vi editor uses temporary names that are predictable. A
user could use this vulnerability to write arbitrary files.
2. Vulnerable Versions
Operating System Version Affected Files
------------------------------------------------------------------
OpenServer All /usr/bin/{ex,vi,edit,vedit,view}
/usr/lib/expreserve
/usr/lib/exrecover
3. Workaround
None.
4. OpenServer
4.1 Location of Fixed Binaries
ftp://stage.caldera.com/pub/security/openserver/CSSA-2001-SCO.17/
4.2 Verification
md5 checksums:
e82e73b8fa21426c19d82fb9cd2988e1 usr.bin.vi.tar.Z
md5 is available for download from
ftp://stage.caldera.com/pub/security/tools/
4.3 Installing Fixed Binaries
Upgrade the affected binaries with the following commands:
# cp /usr/bin/ex /usr/bin/ex-
# cp /usr/lib/expreserve /usr/lib/expreserve-
# cp /usr/lib/exrecover /usr/lib/exrecover-
# uncompress /tmp/usr.bin.vi.tar.Z
# cd /
# tar xvf /tmp/usr.bin.vi.tar
5. References
This and other advisories are located at
http://stage.caldera.com/support/security
This advisory addresses Caldera Security internal incident
sr847935.
7. Disclaimer
Caldera International, Inc. is not responsible for the misuse
of any of the information we provide on our website and/or
through our security advisories. Our advisories are a service
to our customers intended to promote secure installation and
use of Caldera International products.
8. Acknowledgements
Caldera International wishes to thank KF <dotslash@snosoft.com>
for discovering and reporting this problem.
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