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__________________________________________________________
The U.S. Department of Energy
Computer Incident Advisory Capability
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INFORMATION BULLETIN
HP-UX OpenMail Vulnerability
April 29, 1998 20:00 GMT Number I-047
______________________________________________________________________________
PROBLEM: HP has identified a vulnerability in the misconfigured servers
of currently supported version of OpenMail.
PLATFORM: Any HP 9000 series 700/800 systems running OpenMail.
DAMAGE: If exploited, this vulnerability may allow local users the
ability to run arbitrary shell commands.
SOLUTION: Reconfigure OpenMail per the OpenMail Technical Guide.
______________________________________________________________________________
VULNERABILITY Hewlett-Packard HIGHLY recommends that the reconfiguration be
ASSESSMENT: done as soon as possible.
______________________________________________________________________________
[ Start Hewlett-Packard Advisory ]
Document ID: HPSBUX9804-078
Date Loaded: 980429
Title: Security Vulnerability in Openmail on HP-UX
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HEWLETT-PACKARD SECURITY ADVISORY: #00078, 29 April 1998
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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 customer's failure to fully
implement instructions in this Security Advisory as soon as possible.
- -------------------------------------------------------------------------
PROBLEM: Insecure configuration of any version of OpenMail.
PLATFORM: Any HP 9000 series 700/800 systems running OpenMail.
DAMAGE: Users can run arbitrary shell commands.
SOLUTION: Reconfigure OpenMail per the OpenMail Technical Guide.
AVAILABILITY: N/A
- -------------------------------------------------------------------------
I.
A. Background
Hewlett-Packard has learned of an OpenMail server misconfiguration that
can give users the ability to run arbitrary shell commands. This
applies to all currently supported OpenMail versions (B.05.01 (GR4)
and B.05.10 (GR5), as well as the earlier B.04.01 (GR3) revision.
B. Fixing the problem
Ref: [OpenMail Technical Guide, pages 3-366, and 3-369]
Hewlett-Packard notes that this issue has already been adequately
addressed in OpenMail. There is a general parameter setting
(UAL_PRINT_SERVER_ONLY) in the general.cfg file, that, if set to TRUE,
forces all server printing to go through OpenMail's print server.
The general customization file general.cfg is located in
/var/opt/openmail/sys, as is the print server's configuration file
print.cfg. On the client all that is necessary is to then change the
'Printer Server Command' to point to one of the configured printers.
OpenMail's print server uses a configuration file to configure available
printers, and validates each print request against its configured
printers. Any print requests that do not match the required syntax will
not be executed.
More information about OpenMail's print server and how to configure it
can be found in the OpenMail Technical Guide (pages 3-366 to 3-369 for
the GR5 edition)
C. To subscribe to automatically receive future NEW HP Security Advisories
and Bulletins from the HP Electronic Support Center via electronic
mail, do the following:
User your browser to get to the HP Electronic Support Center page at:
http://us-support.external.hp.com
(for US, Canada, Asia-Pacific, & Latin-America)
http://europe-support.external.hp.com (for Europe)
Login with your user ID and password, or register for one (remember to
save the User ID assigned to you, and your password). Once you are on
the Main Menu, Click on the Technical Knowledge Database, and it will
connect to a HP Search Technical Knowledge DB page. Near the bottom is
a hyperlink to our Security Bulletin archive. Once in the archive
there is another link to our current security patch matrix. Updated
daily, this matrix is categorized by platform/OS release, and by
bulletin topic.
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, or 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 Bulletin
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.
________________________________________________________________________
- -----End of Document ID: HPSBUX9804-078--------------------------------------
[ End Hewlett-Packard Advisory ]
______________________________________________________________________________
CIAC wishes to acknowledge the contributions of Hewlett-Packard for the
information contained in this bulletin.
______________________________________________________________________________
CIAC, the Computer Incident Advisory Capability, is the computer
security incident response team for the U.S. Department of Energy
(DOE) and the emergency backup response team for the National
Institutes of Health (NIH). CIAC is located at the Lawrence Livermore
National Laboratory in Livermore, California. CIAC is also a founding
member of FIRST, the Forum of Incident Response and Security Teams, a
global organization established to foster cooperation and coordination
among computer security teams worldwide.
CIAC services are available to DOE, DOE contractors, and the NIH. CIAC
can be contacted at:
Voice: +1 925-422-8193
FAX: +1 925-423-8002
STU-III: +1 925-423-2604
E-mail: ciac@llnl.gov
For emergencies and off-hour assistance, DOE, DOE contractor sites,
and the NIH may contact CIAC 24-hours a day. During off hours (5PM -
8AM PST), call the CIAC voice number 925-422-8193 and leave a message,
or call 800-759-7243 (800-SKY-PAGE) to send a Sky Page. CIAC has two
Sky Page PIN numbers, the primary PIN number, 8550070, is for the CIAC
duty person, and the secondary PIN number, 8550074 is for the CIAC
Project Leader.
Previous CIAC notices, anti-virus software, and other information are
available from the CIAC Computer Security Archive.
World Wide Web: http://www.ciac.org/
(or http://ciac.llnl.gov -- they're the same machine)
Anonymous FTP: ftp.ciac.org
(or ciac.llnl.gov -- they're the same machine)
Modem access: +1 (925) 423-4753 (28.8K baud)
+1 (925) 423-3331 (28.8K baud)
CIAC has several self-subscribing mailing lists for electronic
publications:
1. CIAC-BULLETIN for Advisories, highest priority - time critical
information and Bulletins, important computer security information;
2. SPI-ANNOUNCE for official news about Security Profile Inspector
(SPI) software updates, new features, distribution and
availability;
3. SPI-NOTES, for discussion of problems and solutions regarding the
use of SPI products.
Our mailing lists are managed by a public domain software package
called Majordomo, which ignores E-mail header subject lines. To
subscribe (add yourself) to one of our mailing lists, send the
following request as the E-mail message body, substituting
ciac-bulletin, spi-announce OR spi-notes for list-name:
E-mail to ciac-listproc@llnl.gov or majordomo@tholia.llnl.gov:
subscribe list-name
e.g., subscribe ciac-bulletin
You will receive an acknowledgment email immediately with a confirmation
that you will need to mail back to the addresses above, as per the
instructions in the email. This is a partial protection to make sure
you are really the one who asked to be signed up for the list in question.
If you include the word 'help' in the body of an email to the above address,
it will also send back an information file on how to subscribe/unsubscribe,
get past issues of CIAC bulletins via email, etc.
PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing
communities receive CIAC bulletins. If you are not part of these
communities, please contact your agency's response team to report
incidents. Your agency's team will coordinate with CIAC. The Forum of
Incident Response and Security Teams (FIRST) is a world-wide
organization. A list of FIRST member organizations and their
constituencies can be obtained via WWW at http://www.first.org/.
This document was prepared as an account of work sponsored by an
agency of the United States Government. Neither the United States
Government nor the University of California nor any of their
employees, makes any warranty, express or implied, or assumes any
legal liability or responsibility for the accuracy, completeness, or
usefulness of any information, apparatus, product, or process
disclosed, or represents that its use would not infringe privately
owned rights. Reference herein to any specific commercial products,
process, or service by trade name, trademark, manufacturer, or
otherwise, does not necessarily constitute or imply its endorsement,
recommendation or favoring by the United States Government or the
University of California. The views and opinions of authors expressed
herein do not necessarily state or reflect those of the United States
Government or the University of California, and shall not be used for
advertising or product endorsement purposes.
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