[2708] in Kerberos-V5-bugs

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krb5-appl/406: telnetd hoses the host at fork()

daemon@ATHENA.MIT.EDU (Michael D Oltz)
Fri Mar 28 15:54:55 1997

Resent-From: gnats@rt-11.MIT.EDU (GNATS Management)
Resent-To: krb5-unassigned@RT-11.MIT.EDU
Resent-Reply-To: krb5-bugs@MIT.EDU, mdo1@dbatest.cit.cornell.edu
Date: Fri, 28 Mar 1997 15:49:42 -0500
From: mdo1@dbatest.cit.cornell.edu (Michael D Oltz)
Reply-To: mdo1@dbatest.cit.cornell.edu
To: krb5-bugs@MIT.EDU


>Number:         406
>Category:       krb5-appl
>Synopsis:       telnetd hoses the host at  fork()
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    krb5-unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   unknown
>Arrival-Date:   Fri Mar 28 15:51:01 EST 1997
>Last-Modified:
>Originator:     Michael D Oltz
>Organization:
	Cornell University 
>Release:        1.0
>Environment:
	RS/6000, AIX 4.1.4, target same, built with bundled compiler,
        --with-krb4 but not with shared libraries
	
System: AIX dbatest 1 4 000057973500


>Description:
        tried to use the 16-bit NCSA Telnet for Windows bundled 
        with the K5 1.0 release to connect to my K5 server host
        running the K5 telnetd (on a high port number as an
        alternate).  daemon gets through authentication okay,
        then it calls startslave.  when it gets to the fork
        call, the daemon causes a hard crash (cold boot required).
        i haven't stepped into the kernel yet, but it crashes
        fast enough that gdb doesn't report the creation of a 
        new thread. it could be that the child starts, but dies
        before the parent gets to return from the fork()
        p.s. i can gssftp from aforementioned
        host to itself without trouble. but self-telnet dies.
        connecting with any vanilla telnet client causes the
        same problem. any advice? anybody else had this problem?
	
>How-To-Repeat:
        see above. well, that's what happens to me.
	
>Fix:
	
>Audit-Trail:
>Unformatted:

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