Rule History

SID: 2017143 • Source: et/open

Versions (2)

Version DetailsCurrent

Rev: 5 • Jul 13, 2013, 12:00 PM

Message:

ET WEB_SERVER CRLF Injection - Newline Characters in URL

Rule:

alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET WEB_SERVER CRLF Injection - Newline Characters in URL"; flow:established,to_server; http.uri; content:"|0D 0A|"; fast_pattern; pcre:"/[\n\r](?:content-(?:type|length)|set-cookie|location)\x3a/i"; reference:url,www.owasp.org/index.php/CRLF_Injection; classtype:web-application-attack; sid:2017143; rev:5; metadata:created_at 2013_07_13, signature_severity Major, updated_at 2020_09_18;)

Created:

Jul 13, 2013, 12:00 PM

Updated:

Sep 18, 2020, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

May 30, 2025, 12:04 AM

Filename:

rules/emerging-web_server.rules