CVE-2023-42804CWE-22

BigBlueButton Path Traversal – Reading Certain File Extensions

Low · published October 30, 2023

CVSS v3.1
3.1
EPSS
0%
Percentile
38.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
3.1 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00455 · 38.5th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2023-10-30T18:14Z
EPSS history
Timeline
  • 30 OCT 18:14Z
    BigBlueButton Path Traversal – Reading Certain File Extensions
    cvelistv5