""ET WEB_SPECIFIC_APPS Citrix/Netscaler ADC and NetScaler Gateway RCE Attempt CVE-2023-3519""

SID: 2046885

Revision: 1

Class Type: attempted-admin

Metadata: affected_product Citrix, affected_product Netscaler, created_at 2023_07_24, cve CVE_2023_3519, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2023_07_24

Reference:

  • cve

  • 2023-3519

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: any

Destination Network: $HOME_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "/gwtest/formss"

  • Value: "event=st"

  • Value: "target="

  • Value: !"&"

Within: 100

PCRE: "/event=st(?:op|art)(?:&|$)/Ui"

Special Options:

  • http_uri

  • fast_pattern

  • http_uri

  • http_uri

  • http_uri

source