---------- Forwarded message ---------- Date: Sat, 1 Jan 2000 05:31:36 -0800 (PST) From: HP Electronic Support Center <support_feedback@us-support.external.hp.com> To: security_info@us-support.external.hp.com Subject: Security Bulletins Digest 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 Login using your HP Electronic Support Center User ID and Password. Then select Support Information Digests. You may then unsubscribe from the appropriate digest. =============================================================================== Digest Name: Daily Security Bulletins Digest Created: Sat Jan 1 3:00:03 PST 2000 Table of Contents: Document ID Title --------------- ----------- HPSBUX0001-108 Security Vulnerability in Aserver The documents are listed below. ------------------------------------------------------------------------------- Document ID: HPSBUX0001-108 Date Loaded: 19991231 Title: Security Vulnerability in Aserver ------------------------------------------------------------------------- HEWLETT-PACKARD COMPANY SECURITY ADVISORY: #00108, 01 Jan 2000 ------------------------------------------------------------------------- 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: /opt/audio/bin/Aserver can be used to gain root access. PLATFORM: HP9000 Series 7/800 running HP-UX releases 10.X and 11.X DAMAGE: Root access is possible. SOLUTION: Until patches are available disable the Aserver (see below). AVAILABILITY: This advisory will be updated when patches are available. ------------------------------------------------------------------------- I. A. Background A procedure to use /opt/audio/bin/Aserver to gain root access has been made public. B. Recommended solution Until a patch is available, the only two temporary fixes currently available are to disable /opt/audio/bin/Aserver by removing the file, or to remove execute permissions as follows. As root remove functionality with: chmod 400 /opt/audio/bin/Aserver As an alternative, if it is absolutely necessary to run the Aserver, it can be run - yet the system will be vulnerable while the Aserver is starting. Again as root: chmod 6555 /opt/audio/bin/Aserver [***Warning - /opt/audio/bin/Aserver is now vulnerable.***] /opt/audio/bin/Aserver -f [Wait for the parent and child processes to start.] chmod 400 /opt/audio/bin/Aserver [/opt/audio/bin/Aserver is now safe.] C. To subscribe to automatically receive future NEW HP Security Bulletins from the HP IT Resource Center via electronic mail, do the following: Use your browser to get to the HP IT Resource Center page at: http://us-support.external.hp.com (for US, Canada, Asia-Pacific, & Latin-America) http://europe-support.external.hp.com (for Europe) Under the Maintenance and Support Menu (Electronic Support Center): click on the "more..." link. Then - To -subscribe- to future HP Security Bulletins, or To -review- bulletins already released click on "Support Information Digests" near the bottom of the page, under "Notifications". Login with your user ID and password (or register for one). (Remember to save the User ID assigned to you, and your password). On the "Support Information Digest Main" page: click on the "HP Security Bulletin Archive". Once in the archive the third link is 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-alertat_private 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-alertat_private 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. ________________________________________________________________________ -----End of Document ID: HPSBUX0001-108-------------------------------------- ------------------------------------------------------------------------ Justin Leonard Tripp justinat_private Configurable Computing Laboratory Research Assistant CB 461 x8-7206 Electrical and Computer Engineering Department Brigham Young University
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