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.

CVSS v3 7.5 HIGH
CVSS v2.0 4.3 MEDIUM

7.5^/10

CVSS v3 : HIGH

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

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:N/A:N

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

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

Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:brave:brave:*:*:*:*:*:*:*:*

OR	cpe:2.3:o:apple:macos:-:::::::*
	cpe:2.3:o:linux:linux_kernel:-:::::::*
	cpe:2.3:o:microsoft:windows:-:::::::*

History

No history.

Information

Published : 2021-12-27 22:15

Updated : 2022-01-07 19:48

NVD link : CVE-2021-45884

Mitre link : CVE-2021-45884

CVE.ORG link : CVE-2021-45884

JSON object : View

Products Affected

brave

brave

microsoft

windows

linux

linux_kernel

apple

macos

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

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