[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Tue, 5 Jul 2011 09:02:19 +0400
From: Solar Designer <solar@...nwall.com>
To: HD Moore <hdm@...italoffense.net>
Cc: oss-security@...ts.openwall.com, scarybeasts@...il.com
Subject: Re: vsftpd download backdoored
On Tue, Jul 05, 2011 at 08:21:12AM +0400, Solar Designer wrote:
> On Mon, Jul 04, 2011 at 11:04:00PM -0500, HD Moore wrote:
> > This copy is backdoored and has mtime Feb-15-2011. Chris didn't reply
> > when I asked him for a copy from his master (old/vsftpd-2.3.4.tar.gz).
> >
> > http://download.polytechnic.edu.na/pub2/vsftpd/vsftpd-2.3.4.tar.gz
>
> This is very helpful, thank you! How did you find it?
>
> So, I failed to get this server to give me ctime (looked at HTTP headers
> and also tried several FTP commands), and the mtime is Feb 15. We could
> ask the server admins for the ctime.
I think I got the equivalent of the ctime by listing the mtime for ".".
It is Jul 01 22:35. Not sure what timezone, though. Some analysis of
other timestamps on that server suggests UTC-1, but Wikipedia says UTC+1
or +2 for Namibia.
So it appears that the backdoor was introduced between June 30 14:15 UTC
and July 1 23:35 UTC (probably before 21:35, though).
I think I'll stop wasting time on this...
Alexander
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
