From aleph1@DFW.NET Sat Nov 8 11:33:50 1997 Date: Wed, 5 Nov 1997 17:24:51 -0600 From: Aleph One To: BUGTRAQ@NETSPACE.ORG Subject: Security Vulnerability in xlock on VVOS, HP-UX 10.24 HP Support Information Digests =============================================================================== o HP Electronic Support Center World Wide Web Service --------------------------------------------------- If you subscribed through the HP Electronic Support Center and would like to be REMOVED from this mailing list, access the HP Electronic Support Center on the World Wide Web at: http://us-support.external.hp.com Enter the Support Information Digests service as a registered user, using your HP Electronic Support Center User ID and Password to login. You may then unsubscribe from the appropriate digest. =============================================================================== Digest Name: Daily Security Bulletins Digest Created: Wed Nov 5 3:00:04 PST 1997 Table of Contents: Document ID Title --------------- ----------- HPSBUX9711-073 Security Vulnerability in xlock on VVOS, HP-UX 10.24 The documents are listed below. ------------------------------------------------------------------------------- Document ID: HPSBUX9711-073 Date Loaded: 971105 Title: Security Vulnerability in xlock on VVOS, HP-UX 10.24 ------------------------------------------------------------------------- HEWLETT-PACKARD SECURITY BULLETIN: #00073, 4 November 1997 ------------------------------------------------------------------------- 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. ------------------------------------------------------------------------- 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. ____________________________________________________________________ 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: http://us-support.external.hp.com (for US, Canada, Asia-Pacific, & Latin-America) http://europe-support.external.hp.com (for Europe) Click on the Technical Knowledge Database, register as a user (remember to save the User ID assigned to you, and your password), 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. F. 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: HPSBUX9711-073--------------------------------------