CVE Vulnerability

CVE-2021-45884

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.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://hackerone.com/reports/1377864 Permissions Required
https://github.com/brave/brave-core/pull/10742 Patch Third Party Advisory
https://github.com/brave/brave-browser/issues/20079 Issue Tracking Release Notes
https://github.com/brave/brave-browser/issues/19070 Exploit Issue Tracking
Configurations

Configuration 1
Information

Published : 2021-12-27 10:15

Updated : 2022-01-07 07:48

NVD link : CVE-2021-45884

Mitre link : CVE-2021-45884

Products Affected
No products.
CWE
CWE-200