""ET EXPLOIT Exim receive_msg Integer Overflow Attempt Inbound M1 (CVE-2020-28020)""
SID: 2032898
Revision: 2
Class Type: attempted-admin
Metadata: attack_target SMTP_Server, created_at 2021_05_04, cve CVE_2020_28020, deployment Perimeter, deployment Internal, signature_severity Major, updated_at 2021_05_04
Reference:
-
cve
-
2020-28020
Protocol: tcp
Source Network: any
Source Port: any
Destination Network: [$HOME_NET,$HTTP_SERVERS,$SMTP_SERVERS]
Destination Port: [25,26,587]
Flow: established,to_server
Contents:
-
Value: "|0a 20|"
-
Value: "|0a 0a 0a 0a 0a 0a 0a 0a 0a 0a 0a 0a 0a 0a 0a 0a 0a|"
Within:
PCRE:
Special Options:
- fast_pattern