ET EXPLOIT Exim Stack Exhaustion via BDAT Error Inbound (CVE-2020-28019)

SID: 2032903Rev: 10 viewsHistory

Sourceet/open

CreatedMay 4, 2021

UpdatedMay 4, 2021

Classificationattempted-admin

alert smtp any any -> [$HOME_NET,$HTTP_SERVERS,$SMTP_SERVERS] any (msg:"ET EXPLOIT Exim Stack Exhaustion via BDAT Error Inbound (CVE-2020-28019)"; flow:established,to_server; content:"BDAT|20|"; pcre:"/^[^\r\n]{50,}/R"; content:"BDAT|20|"; distance:0; fast_pattern; reference:url,www.qualys.com/2021/05/04/21nails/21nails.txt; reference:cve,2020-28019; classtype:attempted-admin; sid:2032903; rev:1; metadata:attack_target SMTP_Server, created_at 2021_05_04, cve CVE_2020_28019, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_05_04;)

References

url	www.qualys.com/2021/05/04/21nails/21nails.txt
cve	2020-28019

Metadata

attack targetSMTP_Server

created at2021_05_04

cveCVE-2020-28019

deploymentInternal

confidenceHigh

signature severityMajor

tagDescription_Generated_By_Proofpoint_Nexus

updated at2021_05_04

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