""ET WEB_CLIENT GENERIC Possible IE Memory Corruption CollectGarbage with DOM Reset""

SID: 2019730

Revision: 1

Class Type: attempted-user

Metadata: affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2014_11_18, deployment Perimeter, confidence Medium, signature_severity Major, tag Web_Client_Attacks, updated_at 2014_11_18

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

• Value: "unescape"

• Value: "%u"

• Value: "CollectGarbage"

• Value: "innerHTML"

Within:

PCRE: "/^\s?=\s?(?:undefined|false|null|-?0|NaN|\x22\x22|\x27\x27)/Rsi"

Special Options:

• file_data

• nocase

• nocase

• nocase

• nocase

source