ET EXPLOIT DD-WRT UPNP Unauthenticated Buffer Overflow (CVE-2021-27137)

Query · suricata

content:"M-SEARCH|20|"; startswith;
content:"|0d 0a|ST|3a|"; nocase; fast_pattern;
content:"uuid|3a|"; distance:0; within:6;
pcre:"/^[^\r\n]{128,}\r\n/R";
Raw source ET EXPLOIT DD-WRT UPNP Unauthenticated Buffer Overflow (CVE-2021-27137) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert udp any any -> $HOME_NET 1900 (
    msg:"ET EXPLOIT DD-WRT UPNP Unauthenticated Buffer Overflow (CVE-2021-27137)";
    content:"M-SEARCH|20|"; startswith;
    content:"|0d 0a|ST|3a|"; nocase; fast_pattern;
    content:"uuid|3a|"; distance:0; within:6;
    pcre:"/^[^\r\n]{128,}\r\n/R";
    reference:url,ssd-disclosure.com/ssd-advisory-dd-wrt-upnp-buffer-overflow/;
    reference:cve,2021-27137;
    classtype:attempted-admin;
    sid:2032326; rev:1;
    metadata:attack_target Networking_Equipment, created_at 2021_03_25, cve CVE_2021_27137, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_03_25;
)

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