// For flags

CVE-2021-45884

 

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

En Brave Desktop versiones 1.17 hasta 1.33 anteriores a 1.33.106, cuando es habilitado el bloqueo de anuncios basado en CNAME y una extensión de proxy con una reserva SOCKS, se emiten peticiones DNS adicionales fuera de la extensión de proxy usando la configuración DNS del sistema, resultando en una divulgación de información. NOTA: este problema se presenta debido a una corrección incompleta de CVE-2021-21323 y CVE-2021-22916

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-12-27 CVE Reserved
  • 2021-12-27 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-08-04 First Exploit
  • 2024-09-11 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Brave
Search vendor "Brave"
 Brave
Search vendor "Brave" for product "Brave"
 >= 1.17.1 <= 1.33.106
Search vendor "Brave" for product "Brave" and version " >= 1.17.1 <= 1.33.106"
-
Affected
in Apple
Search vendor "Apple"
 Macos
Search vendor "Apple" for product "Macos"
--
Safe
Brave
Search vendor "Brave"
 Brave
Search vendor "Brave" for product "Brave"
 >= 1.17.1 <= 1.33.106
Search vendor "Brave" for product "Brave" and version " >= 1.17.1 <= 1.33.106"
-
Affected
in Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
--
Safe
Brave
Search vendor "Brave"
 Brave
Search vendor "Brave" for product "Brave"
 >= 1.17.1 <= 1.33.106
Search vendor "Brave" for product "Brave" and version " >= 1.17.1 <= 1.33.106"
-
Affected
in Microsoft
Search vendor "Microsoft"
 Windows
Search vendor "Microsoft" for product "Windows"
--
Safe