ET WEB_SPECIFIC_APPS Mitel Micollab Directory Traversal Attempt (CVE-2020-11798)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Mitel Micollab Directory Traversal Attempt (CVE-2020-11798)";
    flow:established,to_server;
    http.request_line;
    content:"GET /awcuser/cgi-bin/vcs_access_file.cgi?file="; startswith; fast_pattern;
    pcre:"/^.{0,10}(?:(?:\x2e|%2[Ee]){1,2}(?:\x2f|\x5c|%5[Cc]|%2[Ff]){1,}){2,}/R";
    reference:url,github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2020/CVE-2020-11798.yaml;
    reference:cve,2020-11798;
    classtype:web-application-attack;
    sid:2056355; rev:2;
    metadata:affected_product Mitel, created_at 2024_09_30, cve CVE_2020_11798, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_11_26, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1083, mitre_technique_name File_And_Directory_Discovery;
    target:dest_ip;
)