Rule History

SID: 2012205 • Source: et/open

Versions (2)

Version DetailsCurrent

Rev: 2 • Jan 20, 2011, 12:00 PM

Message:

ET WEB_CLIENT Possible Malicious String.fromCharCode with charCodeAt String

Rule:

alert http $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET WEB_CLIENT Possible Malicious String.fromCharCode with charCodeAt String"; flow:established,to_client; content:"String.fromCharCode|28|"; nocase; content:"|2E|charCodeAt|28|"; nocase; within:32; pcre:"/String.fromCharCode|28|[a-z,0-9]{1,20}\x2EcharCodeAt\x28/i"; classtype:misc-activity; sid:2012205; rev:2; metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2011_01_20, deployment Perimeter, confidence Medium, signature_severity Major, tag Web_Client_Attacks, updated_at 2019_07_26;)

Created:

Jan 20, 2011, 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