Rule History

alert tcp $HOME_NET [21,25,110,143,443,465,587,636,989:995,5061,5222] -> $EXTERNAL_NET any (msg:"ET EXPLOIT Possible OpenSSL HeartBleed Large HeartBeat Response from Common SSL Port (Outbound from Server)"; flow:established,to_client; content:"|18 03|"; depth:2; byte_test:1,<,4,2; byte_test:2,>,150,3; byte_test:2,<,17000,3; threshold:type limit,track by_dst,count 1,seconds 120; reference:cve,2014-0160; reference:url,blog.inliniac.net/2014/04/08/detecting-openssl-heartbleed-with-suricata/; reference:url,heartbleed.com/; reference:url,blog.fox-it.com/2014/04/08/openssl-heartbleed-bug-live-blog/; classtype:bad-unknown; sid:2018382; rev:9; metadata:created_at 2014_04_11, cve CVE_2014_0160, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_08_16;)