Rule History

SID: 10006813 • Source: ptrules/open

Versions (6)

Version DetailsCurrent

Rev: 1 • Jul 24, 2025, 5:44 PM

Message:

ATTACK [PTsecurity] Apache HTTP Server 2.4.49 RCE attempt (CVE-2021-41773)

Rule:

alert http any any -> any any (msg:"ATTACK [PTsecurity] Apache HTTP Server 2.4.49 RCE attempt (CVE-2021-41773)"; flow:established, to_server; content:"%2e/"; nocase; http_raw_uri; content:"sh"; distance:0; nocase; http_raw_uri; pcre:"/\/(\.|%2e)%2e\//Ii"; content:"POST"; nocase; http_method; reference:cve, 2021-41773; reference:url, twitter.com/lofi42/status/1445382059640434695; reference:url, rules.ptsecurity.com; classtype:attempted-admin; sid:10006813; rev:1;)

Created:

Jul 24, 2025, 5:44 PM

Updated:

Jul 24, 2025, 5:44 PM

DB Created:

Oct 16, 2025, 10:34 AM

DB Updated:

Oct 16, 2025, 10:34 AM

Filename:

rules/ptopen-attacks.rules