Date: Mon, 11 Nov 2002 12:23:14 -0800
From: [email protected]
To: [email protected], [email protected],
Subject: Security Update: [CSSA-2002-044.0] Linux: Preboot eXecution Environment (PXE) server denial-of-service attacks
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To: [email protected][email protected] security-alerts@li=
nuxsecurity.com [email protected]
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SCO Security Advisory
Subject: Linux: Preboot eXecution Environment (PXE) server denial-of-servi=
ce attacks=20
Advisory number: CSSA-2002-044.0
Issue date: 2002 November 11
Cross reference:
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1. Problem Description
The PXE server can be crashed by using corrupt DHCP packets.
This bug could be used to cause a denial-of-service attack.
2. Vulnerable Supported Versions
System Package
----------------------------------------------------------------------
OpenLinux 3.1.1 Server prior to pxe-0.1-33.i386.rpm
OpenLinux 3.1.1 Workstation prior to pxe-0.1-33.i386.rpm
OpenLinux 3.1 Server prior to pxe-0.1-33.i386.rpm
OpenLinux 3.1 Workstation prior to pxe-0.1-33.i386.rpm
3. Solution
The proper solution is to install the latest packages. Many
customers find it easier to use the Caldera System Updater, called
cupdate (or kcupdate under the KDE environment), to update these
packages rather than downloading and installing them by hand.
4. OpenLinux 3.1.1 Server
4.1 Package Location
ftp://ftp.sco.com/pub/updates/OpenLinux/3.1.1/Server/CSSA-2002-044.0/RPMS
4.2 Packages
75380c0629500bcb6ac3185fd7f68cf9 pxe-0.1-33.i386.rpm
4.3 Installation
rpm -Fvh pxe-0.1-33.i386.rpm
4.4 Source Package Location
ftp://ftp.sco.com/pub/updates/OpenLinux/3.1.1/Server/CSSA-2002-044.0/SRPMS
4.5 Source Packages
dc85c1098a2835660007665df6140570 pxe-0.1-33.src.rpm
5. OpenLinux 3.1.1 Workstation
5.1 Package Location
ftp://ftp.sco.com/pub/updates/OpenLinux/3.1.1/Workstation/CSSA-2002-044.0/=
RPMS
5.2 Packages
bfb9e544055e16500098a9fd1c058a7c pxe-0.1-33.i386.rpm
5.3 Installation
rpm -Fvh pxe-0.1-33.i386.rpm
5.4 Source Package Location
ftp://ftp.sco.com/pub/updates/OpenLinux/3.1.1/Workstation/CSSA-2002-044.0/=
SRPMS
5.5 Source Packages
1e6e6cdb4485ad55d7618ae59bb34f5a pxe-0.1-33.src.rpm
6. OpenLinux 3.1 Server
6.1 Package Location
ftp://ftp.sco.com/pub/updates/OpenLinux/3.1/Server/CSSA-2002-044.0/RPMS
6.2 Packages
84544318a2f9cf2f439aecf928ae3a64 pxe-0.1-33.i386.rpm
6.3 Installation
rpm -Fvh pxe-0.1-33.i386.rpm
6.4 Source Package Location
ftp://ftp.sco.com/pub/updates/OpenLinux/3.1/Server/CSSA-2002-044.0/SRPMS
6.5 Source Packages
b740f40b65ec56bbfa8c59439487f7a3 pxe-0.1-33.src.rpm
7. OpenLinux 3.1 Workstation
7.1 Package Location
ftp://ftp.sco.com/pub/updates/OpenLinux/3.1/Workstation/CSSA-2002-044.0/RP=
MS
7.2 Packages
0dffc10145ab632ed3190429d445cfdf pxe-0.1-33.i386.rpm
7.3 Installation
rpm -Fvh pxe-0.1-33.i386.rpm
7.4 Source Package Location
ftp://ftp.sco.com/pub/updates/OpenLinux/3.1/Workstation/CSSA-2002-044.0/SR=
PMS
7.5 Source Packages
e7f92ace6e801f23251fd00a1a76dd98 pxe-0.1-33.src.rpm
8. References
Specific references for this advisory:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCAN-2002-0835http://www.redhat.com/support/errata/RHSA-2002-162.html
SCO security resources:
http://www.sco.com/support/security/index.html
This security fix closes SCO incidents sr867513, fz525783,
erg501646.
9. 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.
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