ET WEB_SPECIFIC_APPS Fortinet Admin API Stack-based Buffer Overflow in AuthHash Cookie (CVE-2025-32756)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Fortinet Admin API Stack-based Buffer Overflow in AuthHash Cookie (CVE-2025-32756)";
    flow:established,to_server;
    http.uri; bsize:16;
    content:"/module/admin.fe"; fast_pattern;
    http.cookie;
    content:"authhash"; nocase;
    pcre:"/^(?:\x3d|\x253[dD])[^\s\x26]{24,}/R";
    reference:url,horizon3.ai/attack-research/attack-blogs/cve-2025-32756-low-rise-jeans-are-back-and-so-are-buffer-overflows/;
    reference:cve,2025-32756;
    classtype:web-application-attack;
    sid:2062929; rev:1;
    metadata:attack_target Server, created_at 2025_06_13, cve CVE_2025_32756, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, updated_at 2025_06_13, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)