CVE-2021-45884 Information

Description

In Brave Desktop 1.17 through 1.33 before 1.33.106 when CNAME-based adblocking and a proxying extension with a SOCKS fallback are enabled additional DNS requests are issued outside of the proxying extension using the system’s DNS settings resulting in information disclosure. NOTE: this issue exists because of an incomplete fix for CVE-2021-21323 and CVE-2021-22916.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Reference

https://hackerone.com/reports/1377864 https://github.com/brave/brave-core/pull/10742 https://github.com/brave/brave-browser/issues/20079 https://github.com/brave/brave-browser/issues/19070

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

7.5