Caldera: UnixWare buffer overflow
| The ndcfg command raises its privileges with the security subsystem (as opposed to being setuid), and has a buffer overlow in its command line processing. This could allow a malicious user to run code of their choice with raised privileges. |
Caldera International, Inc. Security Advisory
Subject: UnixWare 7.1.1 Open UNIX 8.0.0 : command line buffer overflow in ndcfg
Advisory number: CSSA-2002-SCO.36
Issue date: 2002 August 21
Cross reference:
______________________________________________________________________________
1. Problem Description
The ndcfg command raises its privileges with the security
subsystem (as opposed to being setuid), and has a buffer
overlow in its command line processing. This could allow a
malicious user to run code of their choice with raised
privileges.
2. Vulnerable Supported Versions
System Binaries
----------------------------------------------------------------------
UnixWare 7.1.1 /usr/lib/netcfg/bin/ndcfg
Open UNIX 8.0.0 /usr/lib/netcfg/bin/ndcfg
3. Solution
The proper solution is to install the latest packages.
4. UnixWare 7.1.1
4.1 Location of Fixed Binaries
ftp://ftp.caldera.com/pub/updates/OpenUNIX/CSSA-2002-SCO.36
4.2 Verification
MD5 (erg712108.pkg.Z) = f8530ac78e14157fd134fd1f0846ba3c
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:
Download erg712108.pkg.Z to the /var/spool/pkg directory
# uncompress /var/spool/pkg/erg712108.pkg.Z
# pkgadd -d /var/spool/pkg/erg712108.pkg
5. Open UNIX 8.0.0
5.1 Location of Fixed Binaries
ftp://ftp.caldera.com/pub/updates/OpenUNIX/CSSA-2002-SCO.36
5.2 Verification
MD5 (erg712108.pkg.Z) = f8530ac78e14157fd134fd1f0846ba3c
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:
Download erg712108.pkg.Z to the /var/spool/pkg directory
# uncompress /var/spool/pkg/erg712108.pkg.Z
# pkgadd -d /var/spool/pkg/erg712108.pkg
6. References
Specific references for this advisory:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0981
Caldera security resources:
http://www.caldera.com/support/security/index.html
This security fix closes Caldera incidents sr868384, fz525920,
erg712108.
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
This issue was discovered during an internal security audit.
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