Versions (5)
Version DetailsCurrent
Rev: 2 • Jul 16, 2021, 12:00 PMET EXPLOIT [ConnectWise CRU] Potential Sonicwall SMA User-Level Authentication Bypass (portal) (CVE-2021-20016)
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT [ConnectWise CRU] Potential Sonicwall SMA User-Level Authentication Bypass (portal) (CVE-2021-20016)"; flow:established,to_server; http.uri; content:"/cgi-bin/portal"; http.referer; content:!"/__api__/v1/logon"; content:!"/cgi-bin/userLogin"; tag:session,5,packets; reference:cve,2021-20016; reference:url,www.jpcert.or.jp/english/at/2021/at210006.html; classtype:web-application-attack; sid:2033347; rev:2; metadata:created_at 2021_07_16, cve CVE_2021_20016, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_07, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)
Jul 16, 2021, 12:00 PM
Apr 7, 2023, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 10, 2025, 9:34 PM
rules/emerging-exploit.rules