CVE-2021-22929 : Exploit Details and Defense Strategies
Learn about CVE-2021-22929, an information disclosure vulnerability in Brave Browser Desktop allowing exposure of sensitive connection information. Find out the impact and mitigation steps.
An information disclosure vulnerability exists in Brave Browser Desktop prior to version 1.28.62, allowing logged warning messages to include timestamps of connections to V2 onion domains in tor.log.
Understanding CVE-2021-22929
This CVE describes a specific issue in the Brave Browser Desktop version prior to 1.28.62 that can lead to exposing sensitive information.
What is CVE-2021-22929?
CVE-2021-22929 is an information disclosure vulnerability in Brave Browser Desktop before version 1.28.62. It enables warning messages with timestamps related to V2 onion domain connections to be stored insecurely.
The Impact of CVE-2021-22929
The impact of this vulnerability is that sensitive connection information to V2 onion domains can be exposed through logged warning messages, potentially leading to unauthorized access or privacy breaches.
Technical Details of CVE-2021-22929
In this section, we will delve into the specific technical aspects of the CVE.
Vulnerability Description
The vulnerability allows timestamps of connections to V2 onion domains to be stored in plaintext within tor.log, presenting a risk of exposing sensitive data.
Affected Systems and Versions
Brave Browser Desktop versions prior to 1.28.62 are affected by this vulnerability.
Exploitation Mechanism
Attackers could potentially exploit this vulnerability by accessing the insecurely stored warning messages in tor.log, gaining insight into timestamped connections to V2 onion domains.
Mitigation and Prevention
To mitigate the risks posed by CVE-2021-22929, immediate steps and long-term security practices are crucial.
Immediate Steps to Take
Users should update their Brave Browser Desktop to version 1.28.62 or above to address this vulnerability and prevent exposure of sensitive information.
Long-Term Security Practices
Implementing secure logging practices, regular security audits, and staying updated with software patches and updates can help enhance overall security posture.
Patching and Updates
It is essential for users to regularly apply security patches and updates provided by Brave Browser to ensure that known vulnerabilities, including CVE-2021-22929, are effectively addressed.