CVE-2020-27606 Explained : Impact and Mitigation
Learn about CVE-2020-27606, a vulnerability in BigBlueButton before 2.2.28 that allows attackers to intercept session cookies, potentially leading to unauthorized access and data compromise. Find out how to mitigate this security risk.
BigBlueButton before 2.2.28 (or earlier) has a vulnerability that allows remote attackers to capture session cookies, potentially compromising security.
Understanding CVE-2020-27606
BigBlueButton's insecure session cookie handling poses a security risk, making it easier for attackers to intercept sensitive information.
What is CVE-2020-27606?
BigBlueButton versions prior to 2.2.28 fail to set the secure flag for session cookies in HTTPS sessions, enabling attackers to capture cookies via HTTP interception.
The Impact of CVE-2020-27606
This vulnerability increases the likelihood of session hijacking and unauthorized access to sensitive data transmitted during BigBlueButton sessions.
Technical Details of CVE-2020-27606
BigBlueButton's security flaw is detailed below:
Vulnerability Description
- Session cookies lack the secure flag in HTTPS sessions
- Attackers can intercept cookies during HTTP transmission
Affected Systems and Versions
- BigBlueButton versions before 2.2.28
Exploitation Mechanism
- Attackers intercept session cookies transmitted over HTTP
Mitigation and Prevention
To address CVE-2020-27606, follow these steps:
Immediate Steps to Take
- Upgrade BigBlueButton to version 2.2.28 or later
- Implement HTTPS for all BigBlueButton sessions
- Monitor network traffic for any suspicious activity
Long-Term Security Practices
- Regularly update and patch BigBlueButton installations
- Conduct security audits to identify and address vulnerabilities
Patching and Updates
- Apply security patches promptly to mitigate known vulnerabilities