Ethical Hacking

Learn to find vulnerabilities before the bad guys do! Gain real world hands on hacking experience in our state of the art hacking lab. Course designed and taught by expert instructors with years of penetration testing experience. 12 student maximum in every class. Certification attempt included in every package.
Computer Forensics Training at InfoSec Institute

Gain the in-demand skills of a certified computer examiner, learn to recover trace data left behind by fraud, theft, and cybercrime perpetrators. Discover the source of computer crime and abuse at your organization so that it never happens again. All of our class sizes are guaranteed to be 12 students or less to facilitate one-on-one interaction with one of our expert instructors.




Network Security Snort-Users
[Top] [All Lists]
<prev [Date] next>
[Advanced]
 <prev [Thread] next>

Re: [Snort-users] max_header_line_len

from [Todd Wease] Network Security [Permanent Link]
Subject: Re: [Snort-users] max_header_line_len
Date: Thu, 27 Mar 2008 07:41:50 -0400 
Hi Serdar,

The header name buffer overflow looks for a header name > 64 characters.
 Header names are taken to be the tags in the data header, e.g.

Subject:
Return-Path:
Received:
etc.

If the number of characters before the ":" is more than 64 characters
the smtp preprocessor alerts.  The max_header_line_len has nothing to do
with this - it looks for the length of the entire line.

Is your network asynchronous?  Are you dropping packets?  Can you
provide a pcap that generates the alert (send to bugs@snort.org)?

Thanks,
Todd

serdar uzun wrote:

Hi,

My Snort alerts many times with "smtp: Attempted header name buffer
overflow".
Then I cleared the line "max_header_line_len .." in snort.conf. But it
has been continueing with same alert. What may be the problem?

------------------------------------------------------------------------
Looking for last minute shopping deals? Find them fast with Yahoo!
Search.
<http://us.rd.yahoo.com/evt=51734/*http://tools.search.yahoo.com/newsearch/category.php?category=shopping>



------------------------------------------------------------------------

-------------------------------------------------------------------------
Check out the new SourceForge.net Marketplace.
It's the best place to buy or sell services for
just about anything Open Source.
http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace


------------------------------------------------------------------------

_______________________________________________
Snort-users mailing list
Snort-users@lists.sourceforge.net
Go to this URL to change user options or unsubscribe:
https://lists.sourceforge.net/lists/listinfo/snort-users
Snort-users list archive:
http://www.geocrawler.com/redir-sf.php3?list=snort-users



-------------------------------------------------------------------------
Check out the new SourceForge.net Marketplace.
It's the best place to buy or sell services for
just about anything Open Source.
http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace
_______________________________________________
Snort-users mailing list
Snort-users@lists.sourceforge.net
Go to this URL to change user options or unsubscribe:
https://lists.sourceforge.net/lists/listinfo/snort-users
Snort-users list archive:
http://www.geocrawler.com/redir-sf.php3?list=snort-users
[More messages with this same subject...]




<Prev in Thread] Current Thread [Next in Thread>
Previous by Date:  Re: [Snort-users] Aanval 4 - First Public Appearance, Paul Halliday
Next by Date:  [Snort-users] Snort-Wireless, any experience?, salomon.riedo
Previous by Thread:  [Snort-users] max_header_line_len, serdar uzun
Next by Thread:  [Snort-users] Snort-Wireless, any experience?, salomon.riedo
Indexes:  [Date] [Thread] [Top] [All Lists]