bin/108547: top allows local denial of service attack

[Dr. Markus Waldeck]

>Number:         108547
>Category:       bin
>Synopsis:       top allows local denial of service attack
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jan 30 11:30:14 GMT 2007
>Closed-Date:
>Last-Modified:
>Originator:     Dr. Markus Waldeck
>Release:        7.0-CURRENT-200701
>Organization:
>Environment:
>Description:
An unprivileged user could waste all CPU time by setting a low delay value in top (interactive or via -s).

Is there any possibility to deactivate this functionality without recompilation?

There are other top implementations that use a "secure mode" configuration
which avoids the setting of the delay value for unprivileged users.


>How-To-Repeat:

>Fix:

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