#alert tls $EXTERNAL_NET 443 -> $HOME_NET any (msg:"ET POLICY Lets Encrypt Free SSL Cert Observed"; flow:established,from_server; content:"|55 04 0a|"; content:"|0d|Let|27|s Encrypt"; distance:1; within:14; metadata: former_category POLICY; reference:url,letsencrypt.org/about/; classtype:policy-violation; sid:2022218; rev:3; metadata:attack_target Client_Endpoint, deployment Perimeter, tag SSL_Malicious_Cert, signature_severity Audit, created_at 2015_12_03, updated_at 2017_10_12;)

Added 2017-10-13 16:25:26 UTC


#alert tls $EXTERNAL_NET 443 -> $HOME_NET any (msg:"ET POLICY Lets Encrypt Free SSL Cert Observed"; flow:established,from_server; content:"|55 04 0a|"; content:"|0d|Let|27|s Encrypt"; distance:1; within:14; metadata: former_category POLICY; reference:url,letsencrypt.org/about/; classtype:policy-violation; sid:2022218; rev:3; metadata:attack_target Client_Endpoint, deployment Perimeter, tag SSL_Malicious_Cert, signature_severity Audit, created_at 2015_12_03, updated_at 2017_10_12;)

Added 2017-10-12 16:20:34 UTC


#alert tls $EXTERNAL_NET 443 -> $HOME_NET any (msg:"ET POLICY Lets Encrypt Free SSL Cert Observed"; flow:established,from_server; content:"|55 04 0a|"; content:"|0d|Let|27|s Encrypt"; distance:1; within:14; reference:url,letsencrypt.org/about/; classtype:policy-violation; sid:2022218; rev:3; metadata:attack_target Client_Endpoint, deployment Perimeter, tag SSL_Malicious_Cert, signature_severity Major, created_at 2015_12_03, updated_at 2016_07_01;)

Added 2017-08-07 21:17:03 UTC


#alert tls $EXTERNAL_NET 443 -> $HOME_NET any (msg:"ET POLICY Lets Encrypt Free SSL Cert Observed"; flow:established,from_server; content:"|55 04 0a|"; content:"|0d|Let|27|s Encrypt"; distance:1; within:14; reference:url,letsencrypt.org/about/; classtype:policy-violation; sid:2022218; rev:3;)

Added 2015-12-24 16:05:05 UTC


alert tls $EXTERNAL_NET 443 -> $HOME_NET any (msg:"ET POLICY Lets Encrypt Free SSL Cert Observed"; flow:established,from_server; content:"|55 04 0a|"; content:"|0d|Let|27|s Encrypt"; distance:1; within:14; reference:url,letsencrypt.org/about/; classtype:policy-violation; sid:2022218; rev:2;)

Added 2015-12-03 17:32:37 UTC


Topic revision: r1 - 2017-10-13 - TWikiGuest
 
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