Rule History

alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT SonicWall SMA 100 Series - Possible Heap-Based Overflow Activity (CVE-2021-20043)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"swcctn="; fast_pattern; http.request_body; content:"bmName="; startswith; pcre:"/^[^&]{100,}/R"; threshold:type threshold, track by_src, count 3, seconds 60; reference:url,research.nccgroup.com/2021/12/09/technical-advisory-sonicwall-sma-100-series-unauthenticated-file-upload-path-traversal-cve-2021-20040/; reference:cve,2021-20043; classtype:attempted-admin; sid:2034897; rev:1; metadata:created_at 2022_01_12, cve CVE_2021_20043, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_01_12;)