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From: SecuriTeam <support@securiteam.com.> To: list@securiteam.com Date: 12 Feb 2007 17:41:49 +0200 Subject: [UNIX] Solaris Telnet Authentication Bypass Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: <20070212152416.70E5A58E0@mail.tyumen.ru.> X-Virus-Scanned: antivirus-gw at tyumen.ru The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com - - promotion The SecuriTeam alerts list - Free, Accurate, Independent. Get your security news from a reliable source. http://www.securiteam.com/mailinglist.html - - - - - - - - - Solaris Telnet Authentication Bypass ------------------------------------------------------------------------ SUMMARY <http://sun.com/solaris/>; Solaris is a computer operating system developed by Sun Microsystems. It is certified against the Single Unix Specification as a version of Unix. The Solaris telnet daemon is vulnerable to authentication bypass. DETAILS In some Solaris version, the telnet daemon allows authentication bypass. Following example will log in you to the system with the user "username" without asking for credentials. telnet -l "-fusername" [hostname] Workaround: Set telnet to work only with console, disable telnet daemon or block port tcp/23. ADDITIONAL INFORMATION The original article can be found at: <http://blogs.securiteam.com/index.php/archives/814>; http://blogs.securiteam.com/index.php/archives/814
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