""ET EXPLOIT Possible OpenSMTPD RCE Inbound (CVE-2020-7247)""
SID: 2031621
Revision: 2
Class Type: attempted-admin
Metadata: attack_target SMTP_Server, created_at 2021_02_17, cve CVE_2020_7247, deployment Perimeter, deployment Internal, signature_severity Major, updated_at 2021_02_17
Reference:
-
cve
-
2020-7247
Protocol: tcp
Source Network: any
Source Port: any
Destination Network: [$HOME_NET,$SMTP_SERVERS]
Destination Port: [25,26,587]
Flow: established,to_server
Contents:
- Value: "MAIL|20|FROM|3a|<|3b|"
Within:
PCRE:
Special Options:
- fast_pattern