""ET INFO Possible Apache log4j RCE Attempt - Any Protocol (lower TCP Bypass) (CVE-2021-44228)""

SID: 2034808

Revision: 1

Class Type: attempted-admin

Metadata: created_at 2021_12_20, cve CVE_2021_44228, updated_at 2021_12_20

Reference:

  • cve

  • 2021-44228

Protocol: tcp

Source Network: any

Source Port: any

Destination Network: [$HOME_NET,$HTTP_SERVERS]

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "|24 7b|lower|3a|j"

  • Value: "n"

  • Value: "d"

  • Value: "i"

Within: 12

PCRE:

Special Options:

  • nocase

  • fast_pattern

source