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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2001.373 -- HPSBUX0108-164 Sec. Vulnerability in CIFS/9000 Server password 31 August 2001 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: CIFS/9000 Server (SAMBA) Vendor: Hewlett-Packard Operating System: HP-UX Platform: HP 9000 Impact: Reduced Security Access Required: Existing Account - --------------------------BEGIN INCLUDED TEXT-------------------- Document ID: HPSBUX0108-164 Date Loaded: 20010828 Title: Sec. Vulnerability in CIFS/9000 Server password - ----------------------------------------------------------------- HEWLETT-PACKARD COMPANY SECURITY BULLETIN: #0164, Originally issued: 28 August '01 ----------------------------------------------------------------- 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: CIFS/9000 Server (SAMBA) might mistakenly change another user's password if "unix password sync" option is enabled during a client-initiated password change. PLATFORM: HP 9000 servers running CIFS/9000 Server version A.01.07, or lower. DAMAGE: Another user's password is changed instead of the correct user's. SOLUTION: Ensure that the "passwd program" option contains the %u substitution string as follows: passwd program = /bin/passwd %u. MANUAL ACTIONS: Yes, ensure passwd program = /bin/passwd %u AVAILABILITY: Now. ----------------------------------------------------------------- A. Background When "unix password sync" option is enabled, Samba will attempt to synchronize smbpasswd and unix password by calling the program in the "passwd program" option. If the passwd program string does not include the %u substitution, another user's password can be changed unintentionally during this process. The problem only appears on NT clients and does not affect Win9x clients. B. Fixing the problem Ensure that the "passwd program" option contains the %u substitution string. passwd program = /bin/passwd %u C. 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HP is not liable for any misuse of this information by any third party. ________________________________________________________________ - -----End of Document ID: HPSBUX0108-164-------------------------------------- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. 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 iQCVAwUBO4+1Pyh9+71yA2DNAQEYxQP8Cq1sEKfAoQTLB4CrvmMafxsxoChewrHL IGdePwEkOQ9ETT4ufYERpVptbwzw06JJv2JSsWcAd5lxBHuxr7CXNGVJfnb4rRhV RqSoQ+oDMw+mJwPYSc67S1qiG01h3W/3T4zCOmTrJ9x3dMfB8TrLctw/ojV9kIcd PzoAqBL/mck= =CYYS -----END PGP SIGNATURE-----