Rule History

alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT Xiongmai/HiSilicon DVR - RTSP Buffer Overflow Attempt - CVE-2022-26259"; flow:established,to_server; http.method; content:"OPTIONS"; http.header; content:"CSeq|3a 20 3b|"; fast_pattern; content:!"|0d 0a|"; within:100; reference:url,vulncheck.com/blog/xiongmai-iot-exploitation; reference:url,blog.ret2.me/post/2022-01-26-exploiting-xiongmai-dvrs/; reference:cve,2022-26259; classtype:attempted-admin; sid:2041650; rev:1; metadata:affected_product DVR, attack_target IoT, created_at 2022_12_02, cve CVE_2022_26259, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_02;)