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Date: Fri, 19 Nov 1999 00:41:16 +0900 (JST)
From: Tatsuya Kudoh <cdr@cosmonet.org>
To: FreeBSD-gnats-submit@freebsd.org
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Subject: bin/14978: problem of lprm(1)
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>Number:         14978
>Category:       bin
>Synopsis:       lprm(1) does not kill active daemon if hostname is too long
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Nov 18 07:50:00 PST 1999
>Closed-Date:
>Last-Modified:
>Originator:     Tatsuya Kudoh
>Release:        FreeBSD 2.2.8-RELEASE i386
>Organization:
University of Electro-Communications(UEC)
>Environment:
>Description:

When hostname is too long, lprm(1) fails to judge if the job is active or
inactive. As a result, active daemon and filter process executed by daemon
are not terminated.

The cause is that a spool file that has over 39 characters-length filename
causes buffer-overflow.

>How-To-Repeat:

Use long and long hostname.
(I use 35 characters length hostname.)

>Fix:

At easy way,
/usr/src/usr.sbin/lpr/common_source/rmjob.c, line 66:

static char     current[40];            /* active control file name */

Make this array more big. I changed this size to 256.

( In FreeBSD 3.2, this array is at line 72.
  But I don't know if this problem happens in FreeBSD 3.x.)

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


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