Rule History

SID: 2036377 • Source: et/open

Versions (5)

Version DetailsCurrent

Rev: 2 • Apr 26, 2022, 12:00 PM

Message:

ET EXPLOIT [ConnectWise CRU] Java ECDSA (Psychic) TLS Signature (CVE-2022-21449)

Rule:

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT [ConnectWise CRU] Java ECDSA (Psychic) TLS Signature (CVE-2022-21449)"; flow:established,to_client; tls.certs; content:"|04 03 00 08 30 06 02 01 00 02 01 00|"; tag:session,5,packets; reference:url,github.com/thack1/CVE-2022-21449; reference:cve,2022-21449; classtype:targeted-activity; sid:2036377; rev:2; metadata:created_at 2022_04_26, cve CVE_2022_21449, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_25;)

Created:

Apr 26, 2022, 12:00 PM

Updated:

Apr 25, 2024, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 3, 2025, 8:34 PM

Filename:

rules/emerging-exploit.rules