Re: Multiple SID's for same type of event

[Anshuman Anil Deshmukh <anshuman () cybage com>]

Yes. The information provided answers my query. One suggestion here. If we can include this in the rules FAQ, say in 
some section of snort README.* or including this in PULLEDPORK FAQ would help newbies like me.

Thanks and Regards,
Anshuman

-----Original Message-----
From: waldo kitty [mailto:wkitty42 () windstream net] 
Sent: Friday, October 25, 2013 12:14 PM
To: snort-users () lists sourceforge net
Subject: Re: [Snort-users] Multiple SID's for same type of event

On 10/25/2013 1:24 AM, Anshuman Anil Deshmukh wrote:
> Hi,
>
> I have observed that there are different rules for detection of same 
> events. For your reference some of the SID’s as below-
>
> ET POLICY Http Client Body contains passwd= in cleartext: SID 2012886 
> ET POLICY Http Client Body contains pass= in cleartext  : SID 2012887
> ET POLICY Http Client Body contains pwd= in cleartext   : SID 2012888

these are not duplicates... the are plainly different because they use different content detections... passwd != pass 
!= pwd ... even though all three may be used for the same thing, they are different... sure, they might be combined 
into one rule but then we loose the granularity...

> PUA-P2P Skype client start up get latest version attempt: SID 5693 
> PUA-P2P Skype client setup get newest version attempt : SID 5694

these two are in the same boat as the three above... one looks for content:"/getlatestversion?ver="; and the other 
looks for content:"/getnewestversion"; ... while the result may appear the same, the action may not be the same...

> I am just curious to know on why is it so? Are these SID’s mistakenly 
> duplicated or there is a specific reason behind it?

does the above help? you do need to look at the rules' contents at times to see exactly what they are doing... the 
details are where the distinctions come from... the MSG is generally generic but these 5 are very good in that they 
depict what the content searches are ;)

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