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cve[email protected]CVE-2021-22916
HistoryJul 12, 2021 - 11:15 a.m.

CVE-2021-22916

2021-07-1211:15:07
CWE-200
web.nvd.nist.gov
35
4
brave
desktop
adblocking
security
vulnerability
cve-2021-22916
dns
proxy
information disclosure

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

5.9 Medium

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

53.9%

In Brave Desktop between versions 1.17 and 1.26.60, when adblocking is enabled and a proxy browser extension is installed, the CNAME adblocking feature issues DNS requests that used the system DNS settings instead of the extension’s proxy settings, resulting in possible information disclosure.

Affected configurations

NVD
Node
bravebraveRange1.17.01.26.60
CPENameOperatorVersion
brave:bravebravele1.26.60

CNA Affected

[
  {
    "product": "https://github.com/brave/brave-core",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Fixed in 1.26.60"
      }
    ]
  }
]

Social References

More

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

5.9 Medium

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

53.9%

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