CVE-2023-42804

MEDIUM EPSS 36.3%
Published Oct 30, 20232y ago · Modified Jun 17, 20262w ago
5.3 CVSS 3.1
Medium
Find Similar
Published Oct 30, 2023 2y ago
Last Modified Jun 17, 2026 2w ago

Description

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 Details

Base Score
5.3
Exploitability
3.9
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
36.3% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-22 Path Traversal Resource Mgmt

Affected Products 5

VendorProductVersionRange
bigbluebuttonbigbluebutton* ≤2.5.18
bigbluebuttonbigbluebutton2.6.0any
bigbluebuttonbigbluebutton2.6.0any
bigbluebuttonbigbluebutton2.6.0any
bigbluebuttonbigbluebutton2.6.0any

References 2

  • github.com https://github.com/bigbluebutton/bigbluebutton/pull/15960
    Third Party Advisory
  • github.com https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-3qjg-229m-vq84
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.