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WS-2023-0188

Date: June 22, 2023

Brave for iOS protects privileged JS to native bridges by using random JavaScript handler names and security tokens. However, by altering window.braveBlockRequests property from scripts on the web page, these secret values can be stolen. The impact depends on which bridge is abused. As further features are implemented in the Brave, its potential risk tends to be increased.

Language: Swift

Severity Score

Severity Score

Weakness Type (CWE)

Exposure of Sensitive Information to an Unauthorized Actor

CWE-200

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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