Rule History

SID: 2018537 • Source: et/open

Versions (2)

Version DetailsCurrent

Rev: 2 • Jun 6, 2014, 12:00 PM

Message:

ET WEB_CLIENT Possible GnuTLS Client ServerHello SessionID Overflow CVE-2014-3466

Rule:

alert tcp $EXTERNAL_NET [!21,!22,!23,!2100,!3535] -> $HOME_NET 1024:65535 (msg:"ET WEB_CLIENT Possible GnuTLS Client ServerHello SessionID Overflow CVE-2014-3466"; flow:established,to_client; content:"|16 03|"; depth:2; byte_test:1,<,4,2; content:"|02|"; distance:3; within:1; content:"|03|"; distance:3; within:1; byte_test:1,<,4,0,relative; byte_test:4,>,1370396981,1,relative; byte_test:4,<,1465091381,1,relative; byte_test:1,>,32,33,relative; reference:url,radare.today/technical-analysis-of-the-gnutls-hello-vulnerability/; reference:cve,2014-3466; classtype:attempted-user; sid:2018537; rev:2; metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2014_06_06, deployment Perimeter, confidence Medium, signature_severity Major, tag Web_Client_Attacks, updated_at 2019_07_26;)

Created:

Jun 6, 2014, 12:00 PM

Updated:

Jul 26, 2019, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

May 30, 2025, 12:04 AM

Filename:

rules/emerging-web_client.rules