Vulnerability identifier: #VU50829

Vulnerability risk: Medium

CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:U/RC:C]

CVE-ID: N/A

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Brave Browser
Client/Desktop applications / Web browsers

Vendor: Brave Software

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A remote attacker can access .onion dark web domains inside Brave private browsing windows without having to install Tor as a separate software package.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Brave Browser: All versions

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External links
http://www.zdnet.com/article/brave-browser-leaks-onion-addresses-in-dns-traffic/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.