CVE-2020-27604
6.5 · MEDIUMOverview
CVE-2020-27604 is a medium-severity vulnerability affecting bigbluebutton bigbluebutton. It was published on October 21, 2020 and has a CVSS 3.1 base score of 6.5 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
BigBlueButton before 2.3 does not implement LibreOffice sandboxing. This might make it easier for remote authenticated users to read the API shared secret in the bigbluebutton.properties file. With the API shared secret, an attacker can (for example) use api/join to join an arbitrary meeting regardless of its guestPolicy setting.
Remediation
Check the references section for vendor advisories and patches from bigbluebutton. Update bigbluebutton to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| bigbluebutton | bigbluebutton | >= 0, < 2.2.8 | Affected |
Frequently Asked Questions
What is CVE-2020-27604?
CVE-2020-27604 is a medium-severity vulnerability affecting bigbluebutton bigbluebutton. It was published on October 21, 2020 and has a CVSS 3.1 base score of 6.5 (MEDIUM).
How severe is CVE-2020-27604?
This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2020-27604?
Check the references section for vendor advisories and patches from bigbluebutton. Update bigbluebutton to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2020-27604?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-27604 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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