Published:
16 November 1998
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-98.174 -- HEWLETT-PACKARD SECURITY BULLETIN: HPSBUX9811-087 Security Vulnerability in vacation 17 November 1998 =========================================================================== Hewlett Packard has released the following bulletin concerning a vulnerability in the vacation program shipped with HP-UX. This vulnerability may allow remote users to modify system files. - ---------------------------BEGIN INCLUDED TEXT------------------ 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: Mon Nov 16 3:00:03 PST 1998 Table of Contents: Document ID Title - --------------- ----------- HPSBUX9811-087 Security Vulnerability in vacation The documents are listed below. - ------------------------------------------------------------------------------- Document ID: HPSBUX9811-087 Date Loaded: 19981115 Title: Security Vulnerability in vacation - ------------------------------------------------------------------------- HEWLETT-PACKARD COMPANY SECURITY BULLETIN: #00087, 16 November 1998 - ------------------------------------------------------------------------- The information in the following Security Bulletin 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 Bulletin as soon as possible. - ------------------------------------------------------------------------- PROBLEM: The vacation program erroneously passes parameters to sendmail. PLATFORM: HP 9000 series 700/800 running HP-UX releases 9.X, 10.X and 11.0. DAMAGE: Remote users could modify system files. SOLUTION: Install the patches listed below. AVAILABILITY: All patches are available now. - ------------------------------------------------------------------------- I. A. Background The vacation program shipped with HP-UX in /usr/bin/vacation suffers from a fault in that it misunderstands it's inputs and invokes sendmail with the wrong parameters. Both sendmail 5.65 and 8.7.6 are vulnerable to this malady. Also the vacation program ignores a TO: header when the "O" is upper case. B. Fixing the problem Install the applicable patch: HP-UX revision 11.X for HP9000 Series 7/800: PHNE_16295 HP-UX revision 10.20 for HP9000 Series 7/800: PHNE_14042 HP-UX revision 10.0X-10 for HP9000 Series 7/800: PHNE_16726 HP-UX revision 9.X for HP9000 Series 7/800: PHNE_16725 C. 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) Login with your user ID and password (or register for one). Remember to save the User ID assigned to you, and your password. Once you are in the Main Menu: To -subscribe- to future HP Security Bulletins, click on "Support Information Digests". To -review- bulletins already released from the main Menu, click on the "Search Technical Knowledge Database." Near the bottom of the next page, click on "Browse the HP Security Bulletin Archive". Once in the archive there is another link 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-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: HPSBUX9811-087-------------------------------------- - ---------------------------END INCLUDED TEXT-------------------- This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for emergencies. -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key iQCVAwUBNmVgYCh9+71yA2DNAQFuwQP/d5oUx1wROfAiUs+xeaIG+N4FH1Mz7tng eZreM72Y8hv5WLHc/dkHq/mtYoST0HPodbrzExyr6AUnWGCLLa2c3e4RngFjMlkX gXpvTULiw0rHeO6O1nN00cq5y8E7NLHQXxkdX0GdJ76nGnTPtK3uJWdEkNjFN1Ya qC8S8z2Ijtg= =NaPk -----END PGP SIGNATURE-----