SecurityOnion – Lost in Security (and mostly everything else)

Allowed memory size of ‘XXX’ error in Security Onion – Fixed!

May 14, 2015 May 15, 2015SecurityOnion

So off and on while playing with Security Onion and Squert over the past several months, I have come across the dreaded “PHP Fatal error: Allowed memory size of X bytes exhausted (tried to allocate Y bytes) in /var/www/squert/.inc/callback.php” error when pulling up a full PCAP in either ELSA or Squert. Looking around at different posts via the SO group on Google and on Google itself, I could never “fix” the issue. Most of the time the answer was to do the following: You’ll need to increase the memory_limit setting in php.ini and restart Apache.

Umm… What is this on the wife’s laptop?

April 30, 2015 February 23, 2016Packet Analysis, SecurityOnion

So last night while playing around with my router trying to get it running as an OpenVPN Server (which was nothing but an all-day, bang-your-head-against-the-wall kind of experience since, from what I can tell reading multiple sites about Mikrotik, does not have a solid OpenVPN server package) I noticed this little gem in my Squert console via Security Onion:

Security Onion and Elsa issues

November 6, 2014 January 16, 2024SecurityOnion

So the other day while reviewing alerts in Squert I noticed a lot of alerts triggering for ‘ET POLICY SSLv3 outbound connection from client vulnerable to POODLE attack.’ The rule for this is: alert tcp $EXTERNAL_NET [443,465,993,995,25] -> $HOME_NET any (msg:”ET POLICY SSLv3 outbound connection from client vulnerable to POODLE attack”; flow:established,from_server; ssl_version:sslv3; ssl_state:server_hello; content:”|16 03 00|”; depth:3; threshold: type limit, track by_src, seconds 300, count 1; reference:cve,2014-3566; reference:url,blog.fox-it.com/2014/10/15/poodle/; reference:url,www.openssl.org/~bodo/ssl-poodle.pdf; reference:url,askubuntu.com/questions/537196/how-do-i-patch-workaround-sslv3-poodle-vulnerability-cve-2014-3566; reference:url,www.imperialviolet.org/2014/10/14/poodle.html; classtype:policy-violation; sid:2019416; rev:3;) This got me thinking why am I just now starting to see this alert after running SO for a couple months now? Looking into the…