CVE-2021-45884
Brave Desktop DNS Information Disclosure
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.
INFO
Published Date :
Dec. 27, 2021, 10:15 p.m.
Last Modified :
Jan. 7, 2022, 7:48 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-45884.
| URL | 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 |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-45884 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-45884 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jan. 07, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Changed Reference Type https://github.com/brave/brave-browser/issues/19070 No Types Assigned https://github.com/brave/brave-browser/issues/19070 Exploit, Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://github.com/brave/brave-browser/issues/20079 No Types Assigned https://github.com/brave/brave-browser/issues/20079 Issue Tracking, Release Notes, Third Party Advisory Changed Reference Type https://github.com/brave/brave-core/pull/10742 No Types Assigned https://github.com/brave/brave-core/pull/10742 Patch, Third Party Advisory Changed Reference Type https://hackerone.com/reports/1377864 No Types Assigned https://hackerone.com/reports/1377864 Permissions Required Added CWE NIST CWE-200 Added CPE Configuration AND OR *cpe:2.3:a:brave:brave:*:*:*:*:*:*:*:* versions from (including) 1.17.1 up to (including) 1.33.106 OR cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-45884 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-45884
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.14 }} 0.01%
score
0.51073
percentile