PT-2022-19486 · Unknown · Bigbluebutton

Juraj Somorovsky + 2 · Published 2022-06-01 · Updated 2024-03-08 · CVE-2022-29236

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions BigBlueButton versions 2.2 through 2.3.17 BigBlueButton versions 2.4-rc-1 through 2.4-rc-5

Description BigBlueButton is an open source web conferencing system. An attacker can circumvent access restrictions for drawing on the whiteboard. The permission check is inadvertently skipped on the server, due to a previously introduced grace period. The attacker must be a meeting participant.

Recommendations For BigBlueButton versions 2.2 through 2.3.17, update to version 2.3.18 to resolve the issue. For BigBlueButton versions 2.4-rc-1 through 2.4-rc-5, update to version 2.4-rc-6 to resolve the issue.

Exploit

Fix

Improper Authorization

Weakness Enumeration

CWE-285

Related Identifiers

CVE-2022-29236

GHSA-P93G-R9GM-9V6R

Affected Products

Bigbluebutton

References · 11

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/29xxx/CVE-2022-29236.json · Exploit
• https://github.com/bigbluebutton/bigbluebutton/pull/13803 · Patch
• https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-p93g-r9gm-9v6r · Patch
• https://github.com/bigbluebutton/bigbluebutton/pull/14265 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-29236 · Security Note
• https://osv.dev/vulnerability/CVE-2022-29236 · Vendor Advisory
• https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.18 · Note
• https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6 · Note
• https://t.me/cvenotify/30995 · Telegram Post
• https://t.me/cibsecurity/43635 · Telegram Post
• https://t.me/cvenotify/73396 · Telegram Post