Security Onion and Elsa issues
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…