CVE-2021-45884

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Source

https://cve.org/CVERecord?id=CVE-2021-45884

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-45884.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2021-45884

Published

2021-12-27T22:15:07.847Z

Modified

2026-04-10T04:41:43.040160Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator

Summary

[none]

Details

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.

References

Affected packages

Git / github.com/brave/brave-browser

Affected ranges

Type

GIT

Repo

https://github.com/brave/brave-browser

Events

Introduced

e4d2881a3aec8fa6f5b3f454bddb602e682ed75b

Last affected

8b62af10de5cfc5eef418ab8dfd6d5b4e456bdfa

Database specific

{
    "versions": [
        {
            "introduced": "1.17.1"
        },
        {
            "last_affected": "1.33.106"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-45884.json"