ET WEB_SPECIFIC_APPS ASUS asusrouter-- User-Agent And asus_token Cookie Null Byte Authentication Bypass Attempt
Sourceet/open
CreatedMay 28, 2025
UpdatedMay 28, 2025
Classificationattempted-admin
alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS ASUS asusrouter-- User-Agent And asus_token Cookie Null Byte Authentication Bypass Attempt"; flow:established,to_server; http.method; content:"POST"; http.user_agent; bsize:12; content:"asusrouter|2d 2d|"; fast_pattern; http.cookie; content:"asus_token|3d 00|"; reference:url,www.labs.greynoise.io/grimoire/2025-03-28-ayysshush/; classtype:attempted-admin; sid:2062609; rev:1; metadata:affected_product Asus, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_05_28, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2025_05_28, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)
References
Metadata
affected productAsus
attack targetNetworking_Equipment
tls stateplaintext
created at2025_05_28
deploymentInternal
performance impactLow
confidenceHigh
signature severityMajor
tagExploit
updated at2025_05_28
mitre tactic idTA0001
mitre tactic nameInitial_Access
mitre technique idT1190
mitre technique nameExploit_Public_Facing_Application
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