To: [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED]
______________________________________________________________________________
SCO Security Advisory
Subject: Open UNIX 8.0.0 UnixWare 7.1.1 : X server insecure popen and
buffer overflow
Advisory number: CSSA-2002-SCO.38
Issue date: 2002 August 26
Cross reference:
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1. Problem Description
The X server did not drop privilege before invoking xkbcomp
or other external commands. In addition, there was a buffer
overflow in the same area of the code.
2. Vulnerable Supported Versions
System Binaries
----------------------------------------------------------------------
Open UNIX 8.0.0 /usr/X/bin/Xsco
UnixWare 7.1.1 /usr/X/bin/Xsco
3. Solution
The proper solution is to install the latest packages.
4. Open UNIX 8.0.0
4.1 Location of Fixed Binaries
ftp://ftp.sco.com/pub/updates/OpenUNIX/CSSA-2002-SCO.38
4.2 Verification
MD5 (erg711819b.pkg.Z) = 8c06d16b46b7895c545bcdb7c23475d0
md5 is available for download from
ftp://ftp.sco.com/pub/security/tools
4.3 Installing Fixed Binaries
Upgrade the affected binaries with the following commands:
Download erg711819b.pkg.Z to the /var/spool/pkg directory
# uncompress /var/spool/pkg/erg711819b.pkg.Z
# pkgadd -d /var/spool/pkg/erg711819b.pkg
5. UnixWare 7.1.1
5.1 Location of Fixed Binaries
ftp://ftp.sco.com/pub/updates/OpenUNIX/CSSA-2002-SCO.38
5.2 Verification
MD5 (erg711819b.pkg.Z) = 8c06d16b46b7895c545bcdb7c23475d0
md5 is available for download from
ftp://ftp.sco.com/pub/security/tools
5.3 Installing Fixed Binaries
Upgrade the affected binaries with the following commands:
Download erg711819b.pkg.Z to the /var/spool/pkg directory
# uncompress /var/spool/pkg/erg711819b.pkg.Z
# pkgadd -d /var/spool/pkg/erg711819b.pkg
6. References
Specific references for this advisory:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0987
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0988
http://marc.theaimsgroup.com/?l=bugtraq&m=88653528226228&w=2
SCO security resources:
http://www.sco.com/support/security/index.html
This security fix closes SCO incidents sr850806, fz518676,
erg711819.
7. Disclaimer
SCO 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 SCO
products.
8. Acknowledgements
This vulnerability was discovered and researched by Olaf
Kirch ([EMAIL PROTECTED]).
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