CVE-2023-43798CWE-918

BigBlueButton Blind SSRF When Uploading Presentation (mitigation bypass)

Medium · published October 30, 2023

CVSS v3.1
5.6
EPSS
0%
Percentile
34.9
In the wild
Unconfirmed
What it is

BigBlueButton is an open-source virtual classroom. BigBlueButton prior to versions 2.6.12 and 2.7.0-rc.1 is vulnerable to Server-Side Request Forgery (SSRF). This issue is a bypass of CVE-2023-33176. A patch in versions 2.6.12 and 2.7.0-rc.1 disabled follow redirect at `httpclient.execute` since the software no longer has to follow it when using `finalUrl`. There are no known workarounds. We recommend upgrading to a patched version of BigBlueButton.

The record
Technical detail
CVSS v3.1
5.6 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00417 · 34.9th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2023-10-30T22:24Z
EPSS history
Timeline
  • 30 OCT 22:24Z
    BigBlueButton Blind SSRF When Uploading Presentation (mitigation bypass)
    cvelistv5