ET EXPLOIT Cisco REST API Container for Cisco IOS XE Software Authentication Bypass - Successful Exploit (CVE-2019-12643)
Sourceet/open
Fileemerging-exploit.rules
CreatedJanuary 28, 2022
UpdatedAugust 20, 2026
Classificationsuccessful-admin
alert http [$HOME_NET,$HTTP_SERVERS] 55443 -> any any (msg:"ET EXPLOIT Cisco REST API Container for Cisco IOS XE Software Authentication Bypass - Successful Exploit (CVE-2019-12643)"; flow:established,to_client ; flowbits:isset,ET.Cisco_ABypass ; http.stat_code; content:"200"; file.data; strip_whitespace; content:"|5b 7b 22|last-access-time|22 3a|"; fast_pattern; content:"|22|token-id|22 3a 22|"; within:200; pcre:"/^[a-zA-Z0-9]{5,40}/R" ; xbits:set,ET.Cisco_ABypass,track ip_pair,expire 60 ; reference:cve,2019-12643 ; classtype:successful-admin; sid:2035011; rev:3; metadata:affected_product Cisco_IOS, attack_target Networking_Equipment, created_at 2022_01_28, cve CVE_2019_12643, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_08_20, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)
References
| cve | 2019-12643 |
Metadata
affected productCisco_IOS
attack targetNetworking_Equipment
created at2022_01_28
deploymentInternal
confidenceHigh
signature severityMajor
tagDescription_Generated_By_Proofpoint_Nexus
updated at2026_08_20
mitre tactic idTA0001
mitre tactic nameInitial_Access
mitre technique idT1190
mitre technique nameExploit_Public_Facing_Application
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