Snort mailing list archives

Re: log_unified: no IP data for some events


From: Tomás Heredia <tomas.heredia () activesec biz>
Date: Fri, 05 Jun 2009 18:41:15 -0300

And even some more data:
This is the barnyard's log_dump about some of the events:
-----------
[**] [1:3656:4] SMTP MAIL overflow attempt [**]
[Classification: Attempted Information Leak] [Priority: 1]
[Xref => http://www.securityfocus.com/bid/11238]
[Xref => http://cve.mitre.org/cgi-bin/cvename.cgi?name=2004-1546]
Event ID: 72     Event Reference: 72
=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
-------------------

As you can see, there is no IP data.

But other rules work OK:
---------------
[**] [1:2418:4] MISC MS Terminal Server no encryption session initiation
attempt
[**]
[Classification: Unknown Traffic] [Priority: 2]
[Xref => http://www.microsoft.com/technet/security/bulletin/MS01-052.mspx]
Event ID: 119     Event Reference: 119
05/30/09-23:32:22.761966 10.1.1.2:1052 -> 10.0.1.7:3389
TCP TTL:127 TOS:0x0 ID:433 IpLen:20 DgmLen:468 DF
***AP*** Seq: 0x2C734146  Ack: 0x6E9A1945  Win: 0xFFEC  TcpLen: 20
03 00 01 AC 02 F0 80 7F 65 82 01 A0 04 01 01 04  ........e.......
...
63 6C 69 70 72 64 72 00 00 00 A0 C0              cliprdr.....

=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
-----------------------------

Best regards,
Tomas

Tomás Heredia escribió:
I've been looking a litle in that host, and I found Barnyard is having
this errors:
Unknown Network header (0x1FAC)...
Unknown Network header (0x1FAC)...
Unknown Network header (0xA)...
Unknown Network header (0xA)...
Unknown Network header (0xA)...
Unknown Network header (0xA)...
Unknown Network header (0x20A)...
Unknown Network header (0x20A)...
Unknown Network header (0xA)...
Unknown Network header (0xA)...
Unknown Network header (0xA)...
Unknown Network header (0xA)...
Unknown Network header (0xA)...
Unknown Network header (0xA)...
Unknown Network header (0xA)...
Unknown Network header (0xA)...
Unknown Network header (0xA)...

I havn't found anything about them.

Best regards
Tomás

Tomás Heredia escribió:
  
For example:
mysql> select max(event.cid), sig_sid, sig_name, count(event.cid) from event
left join iphdr on (event.sid = iphdr.sid and event.cid = iphdr.cid) 
inner join signature on (signature.sig_id = event.signature) 
where ip_src is null group by sig_id;
+----------------+---------+--------------------------------------------------------------+------------------+
| max(event.cid) | sig_sid |
sig_name                                                     |
count(event.cid) |
+----------------+---------+--------------------------------------------------------------+------------------+
|        3685058 |       1 | tag: Tagged
Packet                                           |           221711 |
...
|        1970797 |    1079 | WEB-MISC WebDAV propfind
access                              |                2 |

sig_sid=1 is no problem.
sid 1079 is one of the offending ones (happens both for standard as for
binary rules)

Cheers!


Joel Esler escribió:
  
    
Can you provide a link to a screenshot?

Sent from my iPhone

On Jun 5, 2009, at 3:30 PM, Tomás Heredia
<tomas.heredia () activesec biz> wrote:

    
      
Hi all,

I’m using Barnyard (0.2) to send snort 2.8.0 inline (I know, I indeed
want to upgrade) log_unified data to an acid_db.
Sometimes, and for some rules (not much in common among them), iphdr
data is not recorded in the database (once it starts missing iphdr data
for a rule, it keeps missing it for newer events). Other rules keep
reporting OK. Other tools (like using snort-unified-perl) doesn’t show
iphdr data in the unified log neither.

It’s quite anoying, specially when the involved rules are dropping
packets.

Is this a known problem?
Does anyone know if it was resolved in a newer release?

Best regards,
Tomás


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