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

SID: 2034663

Revision: 1

Class Type: misc-activity

Metadata: created_at 2021_12_11, cve CVE_2021_44228, updated_at 2021_12_11

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|jndi|3a|"

  • Value: "|24 7b|upper|3a|"

Within:

PCRE:

Special Options:

  • nocase

  • fast_pattern

source