""ET WEB_CLIENT Possible Chrome WebEx Extension RCE Attempt""

SID: 2023756

Revision: 2

Class Type: attempted-user

Metadata: affected_product Google_Chrome, attack_target Client_Endpoint, created_at 2017_01_24, deployment Perimeter, performance_impact Low, signature_severity Major, tag Web_Client_Attacks, updated_at 2024_02_15

Reference:

• Link

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: to_server,established

Contents:

• Value: "cwcsf-nativemsg-iframe-43c85c0d-d633-af5e-c056-32dc7efc570b.html"

• Value: !"webex.com|0d 0a|"

Within:

PCRE:

Special Options:

• http_uri

• http_header

source