CVE-2022-31065 : What You Need to Know
Learn about CVE-2022-31065, a medium severity cross-site scripting vulnerability in BigBlueButton allowing execution of malicious scripts in private chats. Find out the impact, affected versions, and mitigation steps.
BigBlueButton, an open-source web conferencing system, is susceptible to a cross-site scripting vulnerability in private chat feature.
Understanding CVE-2022-31065
This CVE highlights a security issue that allows an attacker to carry out malicious actions through the execution of JavaScript within a user's client.
What is CVE-2022-31065?
In affected versions of BigBlueButton, an attacker can embed malicious JavaScript in their username, which gets executed on the victim's client when they receive a private chat from the attacker containing the malicious script. Additionally, the script also executes when the victim receives a notification that the attacker has left the session. This vulnerability has been addressed in versions 2.4.8 and 2.5.0.
The Impact of CVE-2022-31065
The impact of this vulnerability is rated as medium severity. It has a CVSS base score of 6.5, with low impact on confidentiality, integrity, and availability. The attack complexity is low, requires network access, and user interaction is necessary.
Technical Details of CVE-2022-31065
Below are the technical details regarding the vulnerability.
Vulnerability Description
The vulnerability, categorized as CWE-79, arises from improper neutralization of input during web page generation, allowing for cross-site scripting attacks.
Affected Systems and Versions
BigBlueButton versions prior to 2.4.8 are affected by this vulnerability.
Exploitation Mechanism
An attacker can exploit this vulnerability by embedding malicious JavaScript in their username and having it executed on the victim's client through private chat interactions.
Mitigation and Prevention
To address and prevent exploitation of CVE-2022-31065, follow these measures.
Immediate Steps to Take
Update BigBlueButton to version 2.4.8 or higher to mitigate this vulnerability. Be cautious when engaging in private chat interactions within the platform.
Long-Term Security Practices
Regularly update and patch BigBlueButton to the latest versions to protect against known vulnerabilities. Educate users about safe online practices to prevent social engineering attacks.
Patching and Updates
Stay informed about security updates and advisories from BigBlueButton. Implement a robust patch management process to apply security updates promptly.