HPSBTL0205-044
Published: 2002-06-01 20:08:54
Updated: 2002-06-01 20:08:54
Document ID: HPSBTL0205-044
Date Loaded: 20020531
Title: Security vulnerability in tcpdump
TEXT
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HEWLETT-PACKARD COMPANY SECURITY ADVISORY: #044
Originally issued: 31 May '02
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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: Updated tcpdump packages fix buffer overflow.
PLATFORM: Any system running HP Secure OS software for Linux Release 1.0
DAMAGE: Potential buffer overflow
SOLUTION: Apply the appropriate RPMs (see section B below)
MANUAL ACTIONS: None
AVAILABILITY: The RPMs are available now.
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A. Background
Tcpdump is a command-line tool for monitoring network traffic.
Versions of tcpdump up to and including 3.6.2 have a buffer
overflow that can be triggered by receiving a bad NFS packet
while tracing the network. Tcpdump is not included in the default
installation of HP Secure OS Software for Linux Release 1.0.
B. Fixing the problem
Hewlett-Packard Company recommends that customers who have installed
tcpdump download the RPMs listed in the following Red Hat
Security Advisory:
2002-05-29 RHSA-2002:094 Updated tcpdump packages fix buffer overflow
http://rhn.redhat.com/errata/RHSA-2002-094.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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