by Please direct any follow-ups to comp.sys.hp.hpux.
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HEWLETT-PACKARD SECURITY BULLETIN: #00073, 4 November 1997
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The information in the following Security Bulletin should be acted upon
as soon as possible. Hewlett-Packard 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.
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PROBLEM: Vulnerabilities exist in xlock on VirtualVault 2.0/3.0 if patch
PHSS_9905 is installed.
PLATFORM: HP9000 Series 700/800s running:
HP-UX 10.24 (VVOS) with VirtualVault A.02.00 with patch PHSS_9905.
HP-UX 10.24 (VVOS) with VirtualVault A.03.00 with Extensions
Software (this includes PHSS_9905)
DAMAGE: The xlock vulnerability could result in allowing a local user
to gain unauthorized access to the system.
SOLUTION: Apply PHSS_12961 to correct the vulnerability.
AVAILABILITY: The patch is available now.
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I.
A. Background
The xlock program allows a user to "lock" an X terminal while
maintaining their login session. A vulnerability exists in xlock
that could allow a local user to attain unauthorized access to the
system.
B. Fixing the problem
This problem can be eliminated by applying the recommended patch.
C. Recommended solution
Hewlett-Packard recommends that the PHSS_12961 patch be applied if
PHSS_9905 has already been installed. The PHSS_9905 patch is
included in the Software Extension Media provided with VirtualVault
A.03.00.
NOTE:
These problems only apply to systems running the VirtualVault
Operating System 10.24 that is part of the VirtualVault product
A.02.00 and A.03.00.
D. Impact of the patch
Applying PHSS_12961 eliminates the vulnerability in the xlock
program but does not otherwise impact the system.
E. 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:
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(for US, Canada, Asia-Pacific, & Latin-America)
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(for Europe)
Click on the Technical Knowledge Database, register as a user
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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.
F. To report new security vulnerabilities, send email to
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
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