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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2001.021 -- HP Support Information Digests HPSBUX0101-136 Sec. Vulnerability in inetd(1M) 17 January 2001 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: inetd Vendor: Hewlett-Packard Operating System: HP-UX 10.20, 10.24, 11.00, and 11.04 Platform: HP 9000 Impact: Denial of Service - --------------------------BEGIN INCLUDED TEXT-------------------- Document ID: HPSBUX0101-136 Date Loaded: 20010108 Title: Sec. Vulnerability in inetd(1M) - ------------------------------------------------------------------------ HEWLETT-PACKARD COMPANY SECURITY BULLETIN: #00136, 09 Jan. '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: The inet server (inetd) on HP-UX can be hung by malicious users. PLATFORM: HP 9000 servers running HP-UX releases 10.20, 10.24, 11.00, and 11.04. DAMAGE: Possible Denial of Service (DoS). SOLUTION: Install the appropriate patch as noted below: PHNE_20747 for HP-UX release 10.20; or PHNE_21699 for VVOS release 10.24; or PHNE_21835 for HP-UX release 11.00; or PHNE_23068 for VVOS release 11.04. AVAILABILITY: The patches are available now. - ------------------------------------------------------------------------ I. A. Background A server that uses the 'swait' state in the /etc/inetd.conf file can be made to interfere with one or more services started by inetd. This affects only installations where configuration alterations have been done to include 'swait' service entries. The standard configuration of the Internet Services product, InternetSrvcs, provided by Hewlett-Packard, including telnetd, ftpd, rlogind, etc., will not exhibit the behavior in question. B. Recommended solution The problem can be rectified by installing one of the following patches. PHNE_20747 for HP-UX release 10.20; or PHNE_21699 for VVOS release 10.24; or PHNE_21835 for HP-UX release 11.00; or PHNE_23068 for HP-UX release 11.04. C. 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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: HPSBUX0101-136-------------------------------------- - --------------------------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. The decision to use any or all of this information is the responsibility of each user or organisation, and should be done so in accordance with site policies and procedures. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the original authors to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/Information/advisories.html If you believe that your system has been compromised, contact AusCERT or your representative in FIRST (Forum of Incident Response and Security Teams). 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 iQCVAwUBOm/y0yh9+71yA2DNAQEBRQP8Dok9FA5ISgs6t9to+ixcUukDGuSMLO6Z jV6Kb/9+bCprDNkg6zwu6cam5qr+3LCvERJabj6VZvfmJg/4xIT+TIfZYSpbXeZR OZSjWjSvuZgimUYg609c378krGY+WdlJOzZl8sNJAiciksYoxSAJUxyi3fEmPN84 4MSLRq9CjPU= =BPfu -----END PGP SIGNATURE-----