-----BEGIN PGP SIGNED MESSAGE----- __________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN HP-UX libXt Vulnerability (Update to libXt in Bulletin H-51) September 9, 1997 22:00 GMT Number H-104 ______________________________________________________________________________ PROBLEM: A vulnerability exists for a buffer overflow condition in the Xt library and the file libXt/Error.c. PLATFORM: HP 9000 series 700/800 systems running version 9.X or 10.X DAMAGE: May allows unauthorized file access possibly gaining root privilege. SOLUTION: Apply the patches listed below and relink any suid/sgid programs that use libXt.a. ______________________________________________________________________________ VULNERABILITY The information in the following Security Bulletin should be ASSESSMENT: 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. ______________________________________________________________________________ [ Start Hewlett-Packard Advisory ] Document ID: HPSBUX9704-058 Date Loaded: 970909 Title: Security Vulnerability in libXt for HP-UX 9.X & 10.X - ------------------------------------------------------------------------ **REVISED 02**HEWLETT-PACKARD SECURITY BULLETIN: #00058, 28 April 1997 Last Revised: 08 September 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: Buffer overflow condition in libXt/Error.c PLATFORM: HP 9000 series 700/800 systems running version 9.X or 10.X DAMAGE: Users could increase privileges. SOLUTION: Apply the patches listed below and relink any suid/sgid programs that use libXt.a. Programs that use the shared library libXt.sl require no action other than loading the patches. AVAILABILITY: All patches are available now. CHANGE SUMMARY: Added patches for HP-UX 10.24. - ------------------------------------------------------------------------- I. A. Background A buffer overflow condition has been identified in the Xt library. This can be exploited using suid/sgid programs to increase privileges. B. Fixing the problem Apply the library patches and relink any suid/sgid programs that are linked with the archived version of libXt. C. Recommended solution **REVISED 02** Install the applicable patches: PHSS_10167 9.X X11R5/Motif1.2 Runtime PHSS_10168 9.X X11R5/Motif1.2 Development PHSS_9809 10.0X X11R5/Motif1.2 Runtime (also for 10.10) PHSS_9810 10.0X X11R5/Motif1.2 Development PHSS_9809 10.10 X11R5/Motif1.2 Runtime (also for 10.0X) PHSS_9811 10.10 X11R5/Motif1.2 Development PHSS_10688 10.20 X11R5/Motif1.2 Runtime PHSS_9813 10.20 X11R5/Motif1.2 Development PHSS_10789 10.20 X11R6/Motif1.2 Runtime PHSS_9815 10.20 X11R6/Motif1.2 Development -->>PHSS_11021 10.24 VVOS X/Motif Runtime July97 Periodic patch Then relink as indicated above. D. Impact of the patch Installs new versions of X11R5 or X11R6 and Motif1.2. E. 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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: HPSBUX9704-058-------------------------------------- [ 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. 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LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC) H-95: Vulnerability in x-lock H-96: Vulnerability in Bind H-92a: HP-UX X11/Motif Lib and Novell Netware Vulnerabilities H-97: SGI IRIX ftpd Signal Handling Vulnerability H-98: SunOS automounter Vulnerability H-99: SunOS, Solaris ifconfig ioctls Vulnerability H-100: SunOS, Solaris libXt Vulnerability H-101: FreeBSD procfs Vulnerability H-102: SGI IRIX webdist.cgi, handler and wrap programs Vulnerabilities H-103: HP-UX X11/Motif Libraries Vulnerability -----BEGIN PGP SIGNATURE----- Version: 4.0 Business Edition iQCVAwUBNBcqBrnzJzdsy3QZAQH2QAQA3P0JyJQcVji8o9mm+8lhlnyV7XRlPHB9 j7DuYkemGtJeN6YNb6uuus27HwQsJsMpvfwGmMG3uLld8qWFYKaOnI8azeqNFfWK wA6dQuMlJ7f6H0cpTWy++Nv/PfQVQlHIL+vMpprgNnly3+/1SUFrhqZWNZhF1vrD VkCLUrady/4= =kSt7 -----END PGP SIGNATURE-----