-----BEGIN PGP SIGNED MESSAGE----- =============================================================================== Security Advisory CERT-NL =============================================================================== Author/Source : Rene Ritzen Index : S-98-65 Distribution : World Page : 1 Classification: External Version: 1 Subject : Buffer Overflow Vulnerability in mountd Date : 14-oct-98 =============================================================================== By courtesy of CERT Coordination Center we received the following information. CERT Coordination Center advisory CA-98.12 reports a vulnerability in Remotely Exploitable Buffer Overflow Vulnerability in mountd. There is a vulnerability in some implementations of the NFS-software that handles NFS mount requests (the mountd program). Specifically, it is possible for an intruder to overflow a buffer in the area of code responsible for logging NFS activity. This advisory provides information about available patches and workarounds. CERT-NL recommends to apply a patch or as a workaround disable the service. All CERT Coordination Center advisories are mirrored by CERT-NL. The specific URL for this case is: ADVISORIES ARE REGULARLY UPDATED BY CERT COORDINATION CENTER. Therefore we advise you to check on our mirror regularly - you can automate this process using the CERT-NL notifier service. More information about the CERT-NL mirror and notifier services is contained in News items N-95-01 (notifier) and N-95-02 (CERT mirror), both present on ============================================================================== 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://www.surfnet.nl/surfnet/security/cert-nl.html ftp://ftp.surfnet.nl/surfnet/net-security 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 52 87 92 82 ALTIJD BEREIKBAAR EMERGENCIES : +31 6 52 87 92 82 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 for Personal Privacy 5.0 Charset: noconv iQCVAwUBNiSxGVpSTqmIRWKVAQEdbAQAgrN1Zl6Cggysd8t4gliifHFJy7ZnUCzB ib3zuU03KyhXQUSOErw7JGjxbV/A8iEiaIPBRixKadwtrsaJwyg4BsCe2h7P0Sv1 AKbw2XEDxpJpc5FEphkhkBzsu4p2KGtBjajKEN4QbWbnhGRb29SnHGuJsTQ/Ju1d KC5MVIgmdHk= =zd0u -----END PGP SIGNATURE----- -- Rene Ritzen | E-mail:R.Ritzen@accu.uu.nl manager Consulting, Projects, Innovation | Tel. : +31 30 2533785 P.O.-box 80011 | Fax : +31 30 2531633 3508 TA Utrecht | The Netherlands |