-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =============================================================================== >> CERT-NL, 01-Mar-2000 << >> All CERT-NL information has been moved to http://cert.surfnet.nl. Links << >> to CERT-NL information contained in this advisory are therefore outdated. << >> << >> CERT-NL also has stopped the CERT-CC-Mirror service. Due to this the << >> links to the CERT-CC mirror are obsolete. Visit the CERT-CC site for the << >> complete CERT-CC advisory texts: http://www.cert.org << =============================================================================== =============================================================================== Security Advisory CERT-NL =============================================================================== Author/Source : CERT-NL Index : S-92-07 Distribution : SURFnet Constituency Page : 1 Classification: External Version: final Subject : AIX /bin/passw Vulnerability Date : 31-mar-92 =============================================================================== CERT-NL (SURFnet Computer Emergency Response Team) has received information concerning a security problem in AIX/bin/passwd. CERT-NL wishes to thank CERT/CC for bringing this to our attention. =========================================================================== CA-92:07 CERT Advisory March 31, 1992 AIX /bin/passwd Vulnerability - --------------------------------------------------------------------------- The Computer Emergency Response Team/Coordination Center (CERT/CC) has received information concerning a vulnerability with the passwd command in AIX 3.2 and the 2007 update of AIX 3.1. IBM is aware of this problem, and a fix is available as apar number "ix23505". Patches are available for AIX 3.2 and the 2007 update of AIX 3.1. This fix may be ordered from Level 2 support or by anonymous ftp from software.watson.ibm.com (129.34.139.5) on the Internet. 1. To order from IBM call 1-800-237-5511 and ask that the fix be shipped. Patches may be obtained outside the U.S. by contacting your local IBM representative. 2. If you are on the Internet, use anonymous ftp to obtain the fix from software.watson.ibm.com. Patch Filename Checksum AIX 3.2 pub/aix3/pas.32.tar.Z 54431 2262 AIX 3.1 2007 pub/aix3/pas.31.tar.Z 06703 99 Patches should be retrieved using binary mode. IBM is currently incorporating the fix into the 3.2 version and 3.1 updates of AIX. Future shipments of these products should not be vulnerable to this problem. If you have any questions about products you receive, please contact your IBM representative. - --------------------------------------------------------------------------- I. Description The passwd command contains a security vulnerability. II. Impact Local users can gain unauthorized root access. III. Solution A. As root, disable /bin/passwd until you obtain and install the patch. # chmod 0500 /bin/passwd B. Obtain the fix from IBM and install according to the directions provided with the patch. - --------------------------------------------------------------------------- The CERT/CC would like to thank Paul Selick of the University of Toronto for bringing this security vulnerability to our attention. We would also like to thank IBM for their quick response to this problem, and for making the patches available via anonymous ftp. - --------------------------------------------------------------------------- ============================================================================== CERT-NL is the Computer Emergency Response Team for SURFnet customers. SURFnet is the Dutch network for educational, research and related institutes. CERT-NL is a member of the Forum of Incident Response and Security Teams (FIRST). All CERT-NL material is available under: http://cert.surfnet.nl/ In case of computer or network security problems please contact your local CERT/security-team or CERT-NL (if your institute is NOT a SURFnet customer please address the appropriate (local) CERT/security-team). CERT-NL is one/two hour(s) ahead of UTC (GMT) in winter/summer, i.e. UTC+0100 in winter and UTC+0200 in summer (DST). Email: cert-nl@surfnet.nl ATTENDED REGULARLY ALL DAYS Phone: +31 302 305 305 BUSINESS HOURS ONLY Fax: +31 302 305 329 BUSINESS HOURS ONLY Snailmail: SURFnet bv Attn. CERT-NL P.O. Box 19035 NL - 3501 DA UTRECHT The Netherlands NOODGEVALLEN: 06 22 92 35 64 ALTIJD BEREIKBAAR EMERGENCIES : +31 6 22 92 35 64 ATTENDED AT ALL TIMES CERT-NL'S EMERGENCY PHONENUMBER IS ONLY TO BE USED IN CASE OF EMERGENCIES: THE SURFNET HELPDESK OPERATING THE EMERGENCY NUMBER HAS A *FIXED* PROCEDURE FOR DEALING WITH YOUR ALERT AND WILL IN REGULAR CASES RELAY IT TO CERT-NL IN AN APPROPRIATE MANNER. CERT-NL WILL THEN CONTACT YOU. =============================================================================== -----BEGIN PGP SIGNATURE----- Version: PGP 6.5.1i iQA/AwUBOL6V9TSYjBqwfc9jEQL1KQCfVG7MPYmUODxtADUP02YZWs0LAMMAniwA 8BWr29yU/5N3bF6HcgMfXMxo =9oMa -----END PGP SIGNATURE-----