ET WEB_SERVER Successful FortiOS Auth Bypass Attempt - Config Leaked (CVE-2022-40684)

Query · suricata

flow:established,to_client;
flowbits:isset,ET.CVE-2022-40684;
http.response_body;
content:"#config-version="; startswith;
content:"user=Local_Process_Access|0a|#conf_file_ver="; within:500; fast_pattern;
content:"|0a|#buildno="; within:500;
target:src_ip;

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

Raw source ET WEB_SERVER Successful FortiOS Auth Bypass Attempt - Config Leaked (CVE-2022-40684) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http [$HOME_NET,$HTTP_SERVERS] any -> $EXTERNAL_NET any (
    msg:"ET WEB_SERVER Successful FortiOS Auth Bypass Attempt - Config Leaked (CVE-2022-40684)";
    flow:established,to_client;
    flowbits:isset,ET.CVE-2022-40684;
    http.response_body;
    content:"#config-version="; startswith;
    content:"user=Local_Process_Access|0a|#conf_file_ver="; within:500; fast_pattern;
    content:"|0a|#buildno="; within:500;
    reference:url,www.horizon3.ai/fortios-fortiproxy-and-fortiswitchmanager-authentication-bypass-technical-deep-dive-cve-2022-40684/;
    reference:url,github.com/horizon3ai/CVE-2022-40684/blob/master/CVE-2022-40684.py;
    reference:cve,2022-40684;
    classtype:successful-admin;
    sid:2039485; rev:1;
    metadata:affected_product Web_Server_Applications, affected_product Fortigate, attack_target Web_Server, created_at 2022_10_20, cve CVE_2022_40684, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_10_20;
    target:src_ip;
)

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