""ET WEB_SPECIFIC_APPS Apache Struts inbound .getWriter OGNL injection remote code execution attempt""

SID: 2026032

Revision: 2

Class Type: attempted-admin

Metadata: affected_product Apache_Struts2, attack_target Server, created_at 2018_08_24, cve CVE_2018_11776, deployment Datacenter, signature_severity Major, updated_at 2018_08_24, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application

Reference:

• cve

• 2018-11776

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: any

Destination Network: $HTTP_SERVERS

Destination Port: $HTTP_PORTS

Flow: to_server,established

Contents:

• Value: "${"

• Value: ".getWriter"

Within:

PCRE:

Special Options:

• http_uri

• fast_pattern

• http_uri

source