CVE-2023-42803

BigBlueButton Unrestricted File Upload vulnerability

Description

BigBlueButton is an open-source virtual classroom. BigBlueButton prior to version 2.6.0-beta.2 is vulnerable to unrestricted file upload, where the insertDocument API call does not validate the given file extension before saving the file, and does not remove it in case of validation failures. BigBlueButton 2.6.0-beta.2 contains a patch. There are no known workarounds.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.10%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: bigbluebutton bigbluebutton
Published at:
Updated at:

References

Link Tags
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-w98f-6x8w-xhjc third party advisory
https://github.com/bigbluebutton/bigbluebutton/pull/15990 third party advisory

Frequently Asked Questions

What is the severity of CVE-2023-42803?
CVE-2023-42803 has been scored as a medium severity vulnerability.
How to fix CVE-2023-42803?
To fix CVE-2023-42803, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-42803 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-42803 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-42803?
CVE-2023-42803 affects bigbluebutton bigbluebutton.
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