CVE - CVE-2021-21323

CVE-ID
CVE-2021-21323	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
Brave is an open source web browser with a focus on privacy and security. In Brave versions 1.17.73-1.20.103, the CNAME adblocking feature added in Brave 1.17.73 accidentally initiated DNS requests that bypassed the Brave Tor proxy. Users with adblocking enabled would leak DNS requests from Tor windows to their DNS provider. (DNS requests that were not initiated by CNAME adblocking would go through Tor as expected.) This is fixed in Brave version 1.20.108
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
CONFIRM:https://github.com/brave/brave-browser/security/advisories/GHSA-mqjf-9x5g-2rv6 URL:https://github.com/brave/brave-browser/security/advisories/GHSA-mqjf-9x5g-2rv6 MISC:https://github.com/brave/brave-browser/issues/13527 URL:https://github.com/brave/brave-browser/issues/13527 MISC:https://github.com/brave/brave-core/commit/12fe321eaad8acc1cbd1d70b4128f687777bcf15 URL:https://github.com/brave/brave-core/commit/12fe321eaad8acc1cbd1d70b4128f687777bcf15 MISC:https://github.com/brave/brave-core/pull/7769 URL:https://github.com/brave/brave-core/pull/7769 MISC:https://hackerone.com/reports/1077022 URL:https://hackerone.com/reports/1077022
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20201222	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20201222)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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