ET EXPLOIT Windows HTTP Protocol Stack UAF/RCE (CVE-2021-31166), http.sys DOS (CVE-2022-21907) Inbound

SID: 2032962Rev: 12 viewsHistory

Sourceet/open

CreatedMay 17, 2021

UpdatedMay 17, 2021

Classificationattempted-admin

alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT Windows HTTP Protocol Stack UAF/RCE (CVE-2021-31166), http.sys DOS (CVE-2022-21907) Inbound"; flow:established,to_server; http.accept_enc; content:",|20|,"; fast_pattern; reference:url,github.com/0vercl0k/CVE-2021-31166; reference:cve,2021-31166; classtype:attempted-admin; sid:2032962; rev:1; metadata:attack_target Server, created_at 2021_05_17, cve CVE_2021_31166, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2021_05_17, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)

References

url	github.com/0vercl0k/CVE-2021-31166
cve	2021-31166

Metadata

attack targetServer

created at2021_05_17

cveCVE-2021-31166

deploymentInternal

confidenceHigh

signature severityMajor

tagCISA_KEV

updated at2021_05_17

mitre tactic idTA0001

mitre tactic nameInitial_Access

mitre technique idT1190

mitre technique nameExploit_Public_Facing_Application

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