Rule History

SID: 2034126 • Source: et/open

Versions (5)

Version DetailsCurrent

Rev: 1 • Oct 5, 2021, 12:00 PM

Message:

ET POLICY Apache HTTP Server 2.4.49 Observed - Vulnerable to CVE-2021-41773

Rule:

alert http [$HOME_NET,$HTTP_SERVERS] any -> any any (msg:"ET POLICY Apache HTTP Server 2.4.49 Observed - Vulnerable to CVE-2021-41773"; flow:established,to_client; http.server; content:"Apache/2.4.49"; reference:url,httpd.apache.org/security/vulnerabilities_24.html; reference:cve,2021-41773; classtype:bad-unknown; sid:2034126; rev:1; metadata:affected_product Apache_HTTP_server, attack_target Web_Server, created_at 2021_10_05, cve CVE_2021_41773, deployment Perimeter, deployment Internet, confidence High, signature_severity Informational, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_10_05;)

Created:

Oct 5, 2021, 12:00 PM

Updated:

Oct 5, 2021, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 8, 2025, 9:34 PM

Filename:

rules/emerging-policy.rules