Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Bigbluebutton | Bigbluebutton | < 2.2.8 |
Related Weaknesses (CWE)
References
- https://docs.bigbluebutton.org/dev/api.htmlProduct
- https://www.golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-201ExploitThird Party Advisory
- https://docs.bigbluebutton.org/dev/api.htmlProduct
- https://www.golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-201ExploitThird Party Advisory
FAQ
What is CVE-2020-27604?
CVE-2020-27604 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 th...
How severe is CVE-2020-27604?
CVE-2020-27604 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-27604?
Check the references section above for vendor advisories and patch information. Affected products include: Bigbluebutton Bigbluebutton.