""ET EXPLOIT Apache log4j RCE Attempt (udp dns) (Outbound) (CVE-2021-44228)""

SID: 2034763

Revision: 1

Class Type: attempted-admin

Metadata: attack_target Server, created_at 2021_12_17, cve CVE_2021_44228, deployment Perimeter, signature_severity Major, tag Exploit, updated_at 2021_12_17

Reference:

  • cve

  • 2021-44228

Protocol: udp

Source Network: $HOME_NET

Source Port: any

Destination Network: any

Destination Port: any

Flow:

Contents:

  • Value: "|24 7b|jndi|3a|dns|3a 2f 2f|"

Within:

PCRE:

Special Options:

  • nocase

  • fast_pattern

source