Snort mailing list archives

Re: Necessary Change for "1:21417 <-> SPECIFIC-THREATS hostile PDF associated with Laik exploit kit"


From: Joel Esler <jesler () sourcefire com>
Date: Fri, 30 Mar 2012 08:25:12 -0400

I made many announcements. Both on the list and on the blog. In fact, I titled the blog post the exact error, so if 
people will Google the error it will come right up.  It's on the blog at blog.snort.org

--
Joel Esler

On Mar 30, 2012, at 12:20 AM, waldo kitty <wkitty42 () windstream net> wrote:

On 3/5/2012 10:48, Joel Esler wrote:
Nathan, I changed our rule to this:

alert tcp $EXTERNAL_NET $FILE_DATA_PORTS ->  $HOME_NET any (msg:"SPECIFIC-THREATS hostile PDF associated with Laik 
exploit kit"; flow:to_client,established; flowbits:isset,file.pdf; file_data; content:"%PDF-1.6|0D 0A|"; content:") 
/CreationDate (D:20110405234628)>>"; fast_pattern:only; metadata:policy balanced-ips drop, policy security-ips drop, 
service http; classtype:trojan-activity; sid:21417; rev:3;)

It fires perfectly.  Thanks for the update.
hey joel, wasn't there a blog announcement about FILE_DATA_PORTS? i've numerous 
folk contacting me about IDS failures concerning this change and i'm unable to 
find where to point them for the changes they need to make :(


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