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__________________________________________________________
The U.S. Department of Energy
Computer Incident Advisory Capability
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__________________________________________________________
INFORMATION BULLETIN
HP-UX rpc.pcnfsd Vulnerability
February 10, 1999 17:00 GMT Number J-026
______________________________________________________________________________
PROBLEM: Hewlett-Packard has identified a vulnerability in the
rpc.pcnfsd which is used in the spool directory.
PLATFORM: HP 9000 series 700/800.
DAMAGE: If exploited, remote and local users could gain root access.
SOLUTION: Apply patches and reboot.
______________________________________________________________________________
VULNERABILITY Risk is high. If exploited, this defect could allow the main
ASSESSMENT: printer spool directory to be made world writeable.
Hewlett-Packard recommends that the patches be applied as soon
as possible.
______________________________________________________________________________
[ Start Hewlett-Packard Advisory ]
Document ID: HPSBUX9902-091
Date Loaded: 19990207
Title: Security Vulnerability with rpc.pcnfsd
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HEWLETT-PACKARD COMPANY SECURITY BULLETIN: #00091, 08 Febraury 1999
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The information in the following Security Bulletin 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 Bulletin as soon as possible.
- -------------------------------------------------------------------------
PROBLEM: rpc.pcnfsd has an error in its use of the spool directory
PLATFORM: HP 9000 series 700/800.
DAMAGE: Remote and local users can compromise root access.
SOLUTION: Install _all_ applicable patches listed below. Reboot required.
AVAILABILITY: All patches are available now.
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I.
A. Background
rpc.pcnfsd is a remote procedure call used by NFS clients which is
a service providing username and password authentication for system
which have NFS client software installed.
If exploited, this defect allows the main printer spool directory
used by rpc.pcnfsd to be made world writeable.
B. Fixing the problem
This involves installing a series of patches which require
rebooting the system. The main patch requires a libc patch,
which in turn requires a kernal patch.
For HP-UX 10.01: PHNE_17248
For HP-UX 10.10: PHNE_17248
For HP-UX 10.20: PHNE_17098
For HP-UX 11.00: PHNE_16470
The following sets of patches will need to be installed to resolve
all the documented patch dependencies. The dependencies will be
satisfied by the patches listed, or any patch that supersedes them:
s700 10.01: PHNE_17248, PHKL_7059, PHCO_14253;
s800 10.01: PHNE_17248, PHKL_7060, PHCO_14253;
s700 10.10: PHNE_17248, PHKL_8292, PHCO_14254;
s800 10.10: PHNE_17248, PHKL_8293, PHCO_14254;
s700 10.20: PHNE_17098, PHKL_9155, PHKL_16750,
PHCO_13777, PHCO_12922, PHCO_17389,
PHNE_16237, PHKL_16959, PHKL_17012,
PHKL_17253, PHKL_12007;
s800 10.20: PHNE_17098, PHKL_9156, PHKL_16751,
PHCO_13777, PHCO_12922, PHCO_17389,
PHNE_17097, PHKL_16957, PHKL_17013,
PHKL_17254, PHKL_12008;
s700 11.00: PHNE_16470, PHCO_16629, PHKL_15689,
PHCO_14625;
s800 11.00: PHNE_16470, PHCO_16629, PHKL_15689,
PHCO_14625.
NOTE: This problem is fixed fully in HP-UX release 11.01.
C. To subscribe to automatically receive future NEW HP Security
Bulletins from the HP Electronic Support Center via electronic
mail, do the following:
Use 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 in the Main Menu:
To -subscribe- to future HP Security Bulletins,
click on "Support Information Digests".
To -review- bulletins already released from the main Menu,
click on the "Search Technical Knowledge Database."
Near the bottom of the next page, click on "Browse the HP
Security Bulletin Archive".
Once in the archive there is another link to our current Security
Patch Matrix. Updated daily, this matrix categorizes security
patches by platform/OS release, and by bulletin topic.
The security patch matrix is also available via anonymous ftp:
us-ffs.external.hp.com
~ftp/export/patches/hp-ux_patch_matrix
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 Bulletin 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: HPSBUX9902-091--------------------------------------
[ 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
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2. SPI-ANNOUNCE for official news about Security Profile Inspector
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Our mailing lists are managed by a public domain software package
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You will receive an acknowledgment email immediately with a confirmation
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If you include the word 'help' in the body of an email to the above address,
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PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing
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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
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