From support@us.external.hp.com Tue Dec 24 17:13:07 1996 Date: Tue, 24 Dec 1996 03:46:34 -0800 From: HPSL Mail Service Reply-To: support-feedback@us.external.hp.com To: security_info_4@us.external.hp.com Subject: RE: Security Bulletins Digest -------- =============================================================================== ***HP SupportLine Mail Service Notice*** This digest contains a summary of all newly received Security Bulletins. You do not have to have any form of support from Hewlett-Packard to subscribe to this digest or to procure the recommended patches via the HP SupportLine mail service. ------------------------------------------------------------------------------- To obtain a copy of the HP SupportLine mail service user's guide, send the following (in the TEXT PORTION OF THE MESSAGE to) to the HP SupportLine mail service. 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To: support@us.external.hp.com Message Text: unsubscribe security_info =============================================================================== Digest Name: security_info Description: Daily Security Bulletins Digest Created: Tue Dec 24 03:00:01 1996 PST ------------------------------------------------------------------------------- Summary of 'Daily Security Bulletins Digest' documents ------------------------------------------------------------------------------- Document Id Description Page 1 ------------------------------------------------------------------------------- HPSBUX9612-043 Vulnerability with direct audio user space code =============================================================================== Detailed list of 'Daily Security Bulletins Digest' documents =============================================================================== Document Id: [HPSBUX9612-043] Date Loaded: [12-24-96] Description: Vulnerability with direct audio user space code =============================================================================== ------------------------------------------------------------------------- HEWLETT-PACKARD SECURITY BULLETIN: #00043, 24 December 1996 ------------------------------------------------------------------------- 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: Vulnerability with direct audio user space code causes panics PLATFORM: HP 9000 s700 systems only, running HP-UX version 10.10 or 10.20 DAMAGE: Vulnerability makes it possible for an logged-on user to cause a Denial of Service (DoS). SOLUTION: Apply patch PHKL_9579 (HP-UX 10.10), or PHKL_9580 (HP-UX 10.20). AVAILABILITY: All patches are available now. ------------------------------------------------------------------------- I. A. Background A recent mailing list entry described a freeware direct audio application that can panic the system. Currently all audio applications shipped by HP use "Aserver", which will not exhibit this problem. The operating system panic occurs only on HP-UX releases 10.10 and 10.20. The necessary audio hardware may be found on all s700 machines except HP9000 s705, s710 and s74x, which are immune. Any machine with CD quality audio hardware will exhibit the problem. B. Fixing the problem This vulnerability can only be eliminated from HP-UX releases 10.10 and 10.20 by applying the appropriate patch listed above. C. Impact of the patch The patches patch the kernel library module /usr/conf/lib/libhp-ux.a (audio.o) to fix the vulnerability. There are no known side effects. Installation instructions are contained within the patches. D. 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