CVE-2021-45884
CVSS V2 Medium 4.3
CVSS V3 High 7.5
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.
Overview
- CVE ID
- CVE-2021-45884
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-12-27T22:15:07
- Last Modified Date
- 2022-01-07T19:48:06
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:a:brave:brave:*:*:*:*:*:*:*:* | 1 | OR | 1.17.1 | 1.33.106 |
| cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:N/A:N
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 4.3
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| 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 Third Party Advisory |
| https://github.com/brave/brave-browser/issues/19070 | Exploit Issue Tracking Patch Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-45884 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45884 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:38:01 | Added to TrackCVE | |||
| 2022-12-06 05:15:31 | 2021-12-27T22:15Z | 2021-12-27T22:15:07 | CVE Published Date | updated |
| 2022-12-06 05:15:31 | 2022-01-07T19:48:06 | CVE Modified Date | updated | |
| 2022-12-06 05:15:31 | Analyzed | Vulnerability Status | updated |