""ET EXPLOIT [ConnectWise CRU] Potential Sonicwall SMA User-Level Authentication Bypass (sslvpnclient) (CVE-2021-20016)""
SID: 2033346
Revision: 2
Class Type: web-application-attack
Metadata: attack_target Networking_Equipment, created_at 2021_07_16, cve CVE_2021_20016, deployment Perimeter, deployment SSLDecrypt, signature_severity Major, updated_at 2021_07_16
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: $HTTP_PORTS
Destination Network: $HOME_NET
Destination Port: any
Flow: established,to_server
Contents:
-
Value: "/cgi-bin/sslvpnclient"
-
Value: !"/api/v1/logon"
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Value: !"/cgi-bin/userLogin"
Within:
PCRE: "/^Referer\x3a\x20[^\r\n]+\/cgi-bin\/userLogin/Hmi"
Special Options:
-
http_uri
-
http_header