CVE-2023-42804
BigBlueButton Path Traversal – Reading Certain File Extensions
Vexday Risk Score
8Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 3.1EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
30 Oct 2023Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
BigBlueButton is an open-source virtual classroom. BigBlueButton prior to version 2.6.0-beta.1 has a path traversal vulnerability that allows an attacker with a valid starting folder path, to traverse and read other files without authentication, assuming the files have certain extensions (txt, swf, svg, png). In version 2.6.0-beta.1, input validation was added on the parameters being passed and dangerous characters are stripped. There are no known workarounds.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Affected products
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