From agent99@csd.sgi.com Tue Aug 15 00:05:06 2000 From: SGI Security Coordinator Resent-From: mea culpa To: agent99@sgi.com Resent-To: jericho@attrition.org Date: Mon, 14 Aug 2000 15:13:04 -0700 (PDT) Subject: IRIX telnetd vulnerability -----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SGI Security Advisory Title: IRIX telnetd vulnerability Number: 20000801-01-A Date: August 14, 2000 ______________________________________________________________________________ SGI provides this information freely to the SGI user community for its consideration, interpretation, implementation and use. SGI recommends that this information be acted upon as soon as possible. SGI provides the information in this Security Advisory on an "AS-IS" basis only, and disclaims all warranties with respect thereto, express, implied or otherwise, including, without limitation, any warranty of merchantability or fitness for a particular purpose. In no event shall SGI be liable for any loss of profits, loss of business, loss of data or for any indirect, special, exemplary, incidental or consequential damages of any kind arising from your use of, failure to use or improper use of any of the instructions or information in this Security Advisory. ______________________________________________________________________________ SGI acknowledges the telnetd vulnerability reported by LSD on BUGTRAQ and is currently investigating. No further information is available at this time. As further information becomes available, additional advisories will be issued via the normal SGI security information distribution methods including the wiretap mailing list. For the protection of all our customers, SGI does not disclose, discuss or confirm vulnerabilities until a full investigation has occurred and any necessary patch(es) or release streams are available for all vulnerable and supported Unicos, SGI ProPack for Linux and IRIX operating systems. Until SGI has more definitive information to provide, customers are encouraged to assume all security vulnerabilities as exploitable and take appropriate steps according to local site security policies and requirements. The steps below can be used to disable IRIX telnetd daemon, if needed. ================ **** NOTE **** ================ Disabling telnetd daemon will disable the telnet service. 1) Become the root user on the system. % /bin/su - Password: # 2) Edit the file /etc/inetd.conf (for IRIX 5.3 and lower, edit /usr/etc/inetd.conf) with your favorite text editor. Place a "#" as the first character of the line to comment out and deactivate the telnetd daemon. # vi /etc/inetd.conf {Find the following line} telnet stream tcp nowait root /usr/etc/telnetd telnetd {Place a "#" as the first character of the telnet line} #telnet stream tcp nowait root /usr/etc/telnetd telnetd {Save the file} 3) Force inetd to re-read the configuration file. # /etc/killall -HUP inetd 4) Kill any existing telnetd process. # /etc/killall telnetd 5) Return to previous level. # exit % - ----------------------------------------- - --- SGI Security Information/Contacts --- - ----------------------------------------- If there are questions about this document, email can be sent to cse-security-alert@sgi.com. ------oOo------ SGI provides security information and patches for use by the entire SGI community. This information is freely available to any person needing the information and is available via anonymous FTP and the Web. The primary SGI anonymous FTP site for security information and patches is sgigate.sgi.com (204.94.209.1). Security information and patches are located under the directories ~ftp/security and ~ftp/patches, respectively. The SGI Security Headquarters Web page is accessible at the URL http://www.sgi.com/support/security/ . For issues with the patches on the FTP sites, email can be sent to cse-security-alert@sgi.com. For assistance obtaining or working with security patches, please contact your SGI support provider. ------oOo------ SGI provides a free security mailing list service called wiretap and encourages interested parties to self-subscribe to receive (via email) all SGI Security Advisories when they are released. Subscribing to the mailing list can be done via the Web (http://www.sgi.com/support/security/wiretap.html) or by sending email to SGI as outlined below. % mail wiretap-request@sgi.com subscribe wiretap end ^d In the example above, is the email address that you wish the mailing list information sent to. The word end must be on a separate line to indicate the end of the body of the message. The control-d (^d) is used to indicate to the mail program that you are finished composing the mail message. ------oOo------ SGI provides a comprehensive customer World Wide Web site. This site is located at http://www.sgi.com/support/security/ . ------oOo------ For reporting *NEW* SGI security issues, email can be sent to security-alert@sgi.com or contact your SGI support provider. A support contract is not required for submitting a security report. ______________________________________________________________________________ This information is provided freely to all interested parties and may be redistributed provided that it is not altered in any way, SGI is appropriately credited and the document retains and includes its valid PGP signature. -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBOZhs5rQ4cFApAP75AQE+xQP/SjH4vRPrsJrNcG5Zpen5sEyXU6tMmPDA 4cfMe1Cc02FN2ruXjstnwdSdydA1A0YEaPmM6tnDQSoLsQYDTSlEYJBEWVb44kgu 6XX/5W2bYTyf6txgQMGRi+88Tsn/pNY1GpbU8atDjxlJg9+u0ELhHvaG/vki8bEq hCNhXygoSUE= =x87X -----END PGP SIGNATURE-----