ET EXPLOIT Possible Realtek SDK - Stack Buffer Overflow via UPnP SUBSCRIBE Callback Header Inbound (CVE-2021-35393) - Suricata Rule 2033843 (et/open)

ET EXPLOIT Possible Realtek SDK - Stack Buffer Overflow via UPnP SUBSCRIBE Callback Header Inbound (CVE-2021-35393)

7.0.3 5.0SID: 2033843Rev: 2Enabled2 views

Fileemerging-exploit.rules

CreatedAugust 30, 2021

UpdatedApril 25, 2024

Classificationattempted-user

alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT Possible Realtek SDK - Stack Buffer Overflow via UPnP SUBSCRIBE Callback Header Inbound (CVE-2021-35393)"; flow:established,to_server; http.method; content:"SUBSCRIBE"; http.uri; content:"/upnp/"; http.request_header; header_lowercase; content:"callback|3a 20 3c|http"; fast_pattern; startswith; pcre:"/^callback\x3a\x20\x3chttp[^\x3a]+\x3a\d{1,5}[^\/]/i"; reference:url,www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain/; reference:cve,2021-35393; classtype:attempted-user; sid:2033843; rev:2; metadata:attack_target Server, created_at 2021_08_30, cve CVE_2021_35393, deployment Perimeter, deployment Internal, confidence Medium, signature_severity Major, tag Exploit, updated_at 2024_04_25, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)

References

url	www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain/
cve	2021-35393

Metadata

attack targetServer

created at2021_08_30

cve

CVE-2021-35393

deploymentInternal

confidenceMedium

signature severityMajor

tagExploit

updated at2024_04_25

mitre tactic idTA0001

mitre tactic nameInitial_Access

mitre technique idT1190

mitre technique nameExploit_Public_Facing_Application

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