ET EXPLOIT Possible Windows DNS Integer Overflow Attempt M1 (CVE-2020-1350)

Query · suricata

flow:established,from_server;
byte_test:2,>=,0xfeea,0;
content:"|00 00 18|"; within:76;
content:"|00 00 18|"; distance:12; within:64; fast_pattern;
content:"|c0|"; distance:2; within:1;
content:"|00 18|"; distance:1; within:2;
Raw source ET EXPLOIT Possible Windows DNS Integer Overflow Attempt M1 (CVE-2020-1350) · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp any 53 -> any any (
    msg:"ET EXPLOIT Possible Windows DNS Integer Overflow Attempt M1 (CVE-2020-1350)";
    flow:established,from_server;
    byte_test:2,>=,0xfeea,0;
    content:"|00 00 18|"; within:76;
    content:"|00 00 18|"; distance:12; within:64; fast_pattern;
    content:"|c0|"; distance:2; within:1;
    content:"|00 18|"; distance:1; within:2;
    reference:cve,2020-1350;
    reference:url,research.checkpoint.com/2020/resolving-your-way-into-domain-admin-exploiting-a-17-year-old-bug-in-windows-dns-servers/;
    classtype:attempted-admin;
    sid:2030533; rev:4;
    metadata:affected_product Windows_DNS_server, created_at 2020_07_14, cve CVE_2020_1350, performance_impact Significant, confidence Medium, signature_severity Critical, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_07_16;
)

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