HPSBTL0209-066
Published: 2002-09-03 13:53:00
Updated: 2002-09-03 13:53:00
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HEWLETT-PACKARD COMPANY SECURITY ADVISORY: HPSBTL0209-066
Originally issued: 03 Sep 2002
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The information in the following Security Advisory should be acted
upon as soon as possible. Hewlett-Packard Company will not be
liable for any consequences to any customer resulting from the
customer's failure to fully implement instructions in this Security
Advisory as soon as possible.
Because the vulnerability does not require a Hewlett-Packard Secure OS
1.0 patch or re-packaging of the RPM affected by the advisory, the
RPMs have not been produced or tested by Hewlett-Packard.
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PROBLEM: Security vulnerability in PXE package
PLATFORM: Any system running HP Secure OS Software for Linux Release 1.0
DAMAGE: Potential for denial of service.
SOLUTION: Apply the appropriate RPMs (see section B below)
MANUAL ACTIONS: None
AVAILABILITY: The RPMs are available now.
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A. Background
The PXE package contains the PXE (Preboot eXecution Environment)
server and code needed for Linux to boot from a boot disk image on a
Linux PXE server. PXE is not included in the default installation of
HP Secure OS Software for Linux Release 1.0.
Updated PXE packages are now available which fix a vulnerability
that can cause the PXE server to crash.
B. Fixing the problem
Hewlett-Packard Company recommends that customers who have installed
PXE download the RPMs listed in the following Red Hat Security
Advisory in the section labeled "Red Hat Linux 7.1 i386".
2002-08-30 RHSA-2002:162 PXE server crashes from certain DHCP packets
http://rhn.redhat.com/errata/RHSA-2002-162.html
To install the security advisory RPMs, use the following sequence
of commands:
1. If you use the tripwire product, we recommend that you run a
a consistency check and fix any violations before installing
the security advisory RPM.
tripwire --check --interactive
2. Install the advisory RPM from the root account.
rpm -F <advisory RPM name>
3. Update the tripwire database
tripwire --check --interactive
NOTE:
The rpm -q <package name> command can be used to determine if the
package is installed. Hewlett-Packard recommends applying the
security advisory fixes to installed packages only. The -F option
to the RPM installer will only apply the fix if the package is
currently installed on the system. Dependent RPMs can be found by
using the "Find Latest RPMs" search facility at
http://www.redhat.com/apps/download. To find the latest dependent
RPM enter the RPM's name in the "By Keyword" box.
C. To subscribe to automatically receive future HP Security
Bulletins from the HP IT Resource Center via electronic
mail, do the following:
Use your browser to access the HP IT Resource Center page
at:
http://itrc.hp.com
Use the 'Login' tab at the left side of the screen to login
using your ID and password. Use your existing login or the
"Register" button at the left to create a login. Remember to
save the User ID assigned to you, and your password. This
login provides access to many useful areas of the ITRC.
In the left most frame select "Maintenance and Support".
Under the "Notifications" section (near the bottom of
the page), select "Support Information Digests".
To -subscribe- to future HP Security Bulletins or other
Technical Digests, click the check box (in the left column)
for the appropriate digest and then click the "Update
Subscriptions" button at the bottom of the page.
or
To -review- bulletins already released, select the link
(in the middle column) for the appropriate digest.
D. To report new security vulnerabilities, send email to
security-alert@hp.com
Please encrypt any exploit information using the
security-alert PGP key, available from your local key
server. You may also get the security-alert PGP key by
sending a message with a -subject- (not body) of
'get key' (no quotes) to security-alert@hp.com.
Permission is granted for copying and circulating this
advisory to Hewlett-Packard (HP)customers (or the Internet
community) for the purpose of alerting them to problems,
if and only if, the advisory is not edited or changed in
any way, is attributed to HP, and provided such reproduction
and/or distribution is performed for non-commercial purposes.
Any other use of this information is prohibited. HP is not
liable for any misuse of this information by any third party.
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