From owner-freebsd-bugs  Sun Nov 26 19:20: 4 2000
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Date: Sun, 26 Nov 2000 19:18:59 -0800 (PST)
From: xeno@emts.ru
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Subject: misc/23120: '|more' takes up to 100% system resources
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>Number:         23120
>Category:       misc
>Synopsis:       '|more' takes up to 100% system resources
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Nov 26 19:20:01 PST 2000
>Closed-Date:
>Last-Modified:
>Originator:     Pavel V. Pokrovsky
>Release:        FreeBSD-4.0-RELEASE
>Organization:
private
>Environment:
machine is P-200 with 24 MB RAM (SIMM), 4.3 GB Fujitsu. Two ethernet
interfaces (both Realtek 8139).
>Description:
usage of commands with '|more' takes up to 100% of system resources, 
which may be considered as a DoS
>How-To-Repeat:
open MS Windows telnet, then 'telnet' to FreeBSD machine, then 'su root', 
start, for example, "ps -ax | more" and close Windows telnet with a 
simple button-click (not disconnect). Next morning open "telnet" again 
and see "top". On my machine "more" took up to 100% of system resources.

>Fix:
dunno. :(

>Release-Note:
>Audit-Trail:
>Unformatted:


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