CVE-2021-21323

2021-02-2323:15:13

Google

osv.dev

6.6 Medium

AI Score

Confidence

Low

0.001 Low

EPSS

Percentile

34.9%

JSON

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

CPENameOperatorVersion
brave-coreeq1.8.59
brave-coreeq0.72.52
brave-coreeq1.6.30
brave-coreeq1.13.42
brave-coreeq1.5.34
brave-coreeq0.64.26
brave-coreeq0.68.22
brave-coreeq0.72.5
brave-coreeq1.10.25
brave-coreeq1.11.46

Name	Operator	Version
brave-core	eq	1.8.59
brave-core	eq	0.72.52
brave-core	eq	1.6.30
brave-core	eq	1.13.42
brave-core	eq	1.5.34
brave-core	eq	0.64.26
brave-core	eq	0.68.22
brave-core	eq	0.72.5
brave-core	eq	1.10.25
brave-core	eq	1.11.46