Vulnerability · Published Jun 1, 2022 · Assigned by GitHub_M

CVE-2022-29234Grace period for lock settings in public/private chats in BigBlueButton

Medium 4.3

In plain English

A medium-severity security flaw in bigbluebutton from bigbluebutton. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 58% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.9%top 41.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

BigBlueButton is an open source web conferencing system. Starting in version 2.2 and prior to versions 2.3.18 and 2.4.1, an attacker could send messages to a locked chat within a grace period of 5s any lock setting in the meeting was changed. The attacker needs to be a participant in the meeting. Versions 2.3.18 and 2.4.1 contain a patch for this issue. There are currently no known workarounds.

Affected products (as reported)

Vendor	Product	Versions
bigbluebutton	bigbluebutton	>= 2.2, < 2.3.18>= 2.4, < 2.4.1

Weakness: CWE-285 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References

https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-36vc-c338-6xjv x_refsource_CONFIRM
https://github.com/bigbluebutton/bigbluebutton/pull/13850 x_refsource_MISC
https://github.com/bigbluebutton/bigbluebutton/pull/14265 x_refsource_MISC
https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.18 x_refsource_MISC
https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4.1 x_refsource_MISC