mailing list archives
Re: Snort 126.96.36.199 Now Available
From: L0rd Ch0de1m0rt <l0rdch0de1m0rt () gmail com>
Date: Mon, 8 Nov 2010 11:11:48 -0600
Hello. Unfortunately I cannot provide pcap but I hoped to provide
enough info so that it could be reproduced.
Eoin: I saw your email and read your blog post when it came out ... I
was just hoping that snort version 188.8.131.52 fixed the issues with the
HTTP pre-processor and reassembly since Steve Sturges indicated it did
but maybe he is referring to other fixes???
On Mon, Nov 8, 2010 at 10:54 AM, Russ Combs <rcombs () sourcefire com> wrote:
Can you send us a pcap?
On Mon, Nov 8, 2010 at 11:45 AM, L0rd Ch0de1m0rt <l0rdch0de1m0rt () gmail com>
I am still experiencing HTTP stream reassembly issues when trying to
match across multiple fragmented packets with snort 184.108.40.206.
Specifically, this happens on a HTTP POST where the headers are in a
different packet than the POST data. Consider the following rule you
can use along with scapy to reproduce if you want:
alert tcp any any -> $HOME_NET $HTTP_PORTS (msg:"Incoming German POST
to Batman"; flow:established,to_server; content:"POST"; http_method;
uricontent:"/batcave/"; uricontent:"unicorns4sourcefire"; content:"|0d
0a|Accept-Language: de"; nocase; http_header; content:!"|0d 0a 0d
0a|not4batman=true&"; content:!"\; batsecret=sesstoken4robin";
http_cookie; classtype:trojan-activity; sid:8008135; rev:17;)
It alerts (b/c all the URI and HTTP header stuffs match in the initial
packet) but it shouldn't alert b/c the HTTP POST data starts with
'not4batman=true&' (but the POST data is in a subsequent packet than
the one containing the headers).
Anyone else still having issues or have done more in-depth testing
with 220.127.116.11 and the HTTP pre-processor?
On Tue, Nov 2, 2010 at 5:34 PM, Steven Sturges
<steve.sturges () sourcefire com> wrote:
There was an issue in that HTTP inspect wasn't correctly handling
raw vs. stream reassembled packets when looking at HTTP response
data. This fix is included in 2901 -- refer to ChangeLog (changes
As to the support of 2.8.6, with the release of 2.9.0, 2.8.6.x
is no longer supported. When there is a new "3 digit" release no
further patches are made to the previous version of Snort.
On 11/1/2010 1:05 PM, L0rd Ch0de1m0rt wrote:
Hello. Does this release fix the issue where the HTTP pre-processor
wasn't properly examining reassembled data across fragmented packets?
(I don't know the exact cause of the bug - maybe it was the other way
around and Stream5 wasn't properly doing the reassebly.) It was
announced that there would be a patch for that issue, just want to see
if this is it. If so, when can we expect the 18.104.22.168 patch be
released? 22.214.171.124 is still supported, right?
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