CVE-2021-45884

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Summary

CVECVE-2021-45884
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-12-27 22:15:00 UTC
Updated2022-01-07 19:48:00 UTC
DescriptionIn 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.

Risk And Classification

Problem Types: CWE-200

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Apple Macos - All All All
Application Brave Brave All All All All
Operating System Linux Linux Kernel - All All All
Operating System Microsoft Windows - All All All

References

ReferenceSourceLinkTags
hackerone #1377864 - CNAME Uncloacking in SOCKS5 protocol · Issue #19070 · brave/brave-browser · GitHub MISC github.com
HackerOne MISC hackerone.com
[Desktop] Release notes for `1.33.x - Release` · Issue #20079 · brave/brave-browser · GitHub MISC github.com
Disable CNAME uncloaking when a proxy extension with a socks fallback is enabled by antonok-edm · Pull Request #10742 · brave/brave-core · GitHub MISC github.com
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