Re: 17494 Falsing on non IE6 systems

["Weir, Jason" <jason.weir () nhrs org>]

What a great idea on the regex - I think something like this will work - for oinkmaster users anyway..

modifysid 17494 "^(.*rev\:[1|2].*)$" | "#${1}"

Disable rev:1 and rev:2 and let the rest go through..

Thanks,
-J

> -----Original Message-----
> From: JJC [mailto:cummingsj () gmail com] 
> Sent: Wednesday, October 27, 2010 1:52 PM
> To: Weir, Jason
> Cc: Lay, James; snort-sigs () lists sourceforge net
> Subject: Re: [Snort-sigs] 17494 Falsing on non IE6 systems
>
>
> This doesn't solve your problem, but you could create a regex 
> that disables the rev:1 of that rule and enables the rev:3+; 
> of that rule... that way you don't have to remember to do it, 
> it's automagic when you update to the ruleset that has the 
> revved rule...
>
> JJC
>
> On Wed, Oct 27, 2010 at 9:17 AM, Weir, Jason 
> <jason.weir () nhrs org> wrote:
> > I agree with James - I had to put a "Re-Enable after 
> 12/1/10" note in 
> > the oink config file..
> >
> > What a PITA..
> >
> > -J
> >
> > > -----Original Message-----
> > > From: Lay, James [mailto:james.lay () wincofoods com]
> > > Sent: Wednesday, October 27, 2010 10:16 AM
> > > To: snort-sigs () lists sourceforge net
> > > Subject: Re: [Snort-sigs] 17494 Falsing on non IE6 systems
> > >
> > >
> > > Ya count me in here...rev 1 is firing on just about 
> everything....YAY 
> > > for us Registered users :)  While I understand the whole pay for 
> > > rules thing, holding out on releasing a fixed rule for 30 
> days, such 
> > > as this one, is kinda crappy.  Not releasing improved/new 
> rules yes, 
> > > but ones that are broken like this...ya not so much.  Yet another 
> > > rule disabled.
> > >
> > > James
> > >
> > > -----Original Message-----
> > > From: Weir, Jason [mailto:jason.weir () nhrs org]
> > > Sent: Wednesday, October 27, 2010 7:08 AM
> > > To: snort-sigs () lists sourceforge net
> > > Subject: Re: [Snort-sigs] 17494 Falsing on non IE6 systems
> > >
> > > Thanks Joel,
> > >
> > > Any chance the revision # could be included on the SID page
> > >
> > > http://www.snort.org/search/sid/1-17494
> > >
> > > That way I could check before posting to the list..
> > >
> > > -J
> > >
> > > > -----Original Message-----
> > > > From: Joel Esler [mailto:jesler () sourcefire com]
> > > > Sent: Wednesday, October 27, 2010 9:02 AM
> > > > To: L0rd Ch0de1m0rt
> > > > Cc: Weir, Jason; snort-sigs () lists sourceforge net
> > > > Subject: Re: [Snort-sigs] 17494 Falsing on non IE6 systems
> > > >
> > > >
> > > > Current revision on this rule is rev:3.  It looks 
> nothing like the 
> > > > below.
> > > >
> > > > Thanks for the feedback Jason.
> > > >
> > > > Joel
> > > >
> > > > On Oct 27, 2010, at 8:51 AM, L0rd Ch0de1m0rt wrote:
> > > >
> > > > > Yea, this is a terribly written rule, especially with Web 2.0 
> > > > > technologies and advertising companies preferring to create
> > > > ginormous
> > > > > URIs.  It's not browser specific ... all modern 
> browsers support
> > > > > URIs>206 bytes and the RFC doesn't specify a limit....
> > > > >
> > > > > Are you running the latest version of this rule?  I could
> > > > be thinking
> > > > > of a different rule but I thought that when this one 
> came out it 
> > > > > everyone started complaining about it and they disabled it.  I 
> > > > > recommend all who are running it to disable it.
> > > > >
> > > > > -L0rd C.
> > > > >
> > > > > On Wed, Oct 27, 2010 at 7:37 AM, Weir, Jason 
> > > > > <jason.weir () nhrs org>
> > > > > wrote:
> > > > > > Tons of false positives on machines running IE7 & 8...
> > > > > >
> > > > > > Maybe do a content match on the IE6 user agent - 
> something like 
> > > > > > content:"compatible; MSIE 6."
> > > > > >
> > > > > > alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS
> > > > (msg:"WEB-CLIENT
> > > > > > Microsoft Internet Explorer Long URL Buffer Overflow 
> attempt"; 
> > > > > > flow:established,to_server; urilen:>260; content:"GET";
> > > > http_method;
> > > > > > content:"HTTP|2F|1|2E|1|0D 0A|"; metadata:service http; 
> > > > > > reference:bugtraq,19667; reference:cve,2006-3869; 
> > > > > > classtype:attempted-user; sid:17494; rev:1;)
> > > > > >
> > > > > > Jason


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