Overview
- 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.
- Source
- security-advisories@github.com
- NVD status
- Modified
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 4.3
- Impact score
- 1.4
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 4
- Impact score
- 2.9
- Exploitability score
- 8
- Vector string
- AV:N/AC:L/Au:S/C:N/I:P/A:N
Weaknesses
- security-advisories@github.com
- CWE-285
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "60814A0D-57C0-4407-B7DD-26A9D5C3DBB1",
"versionEndExcluding": "2.3.18",
"versionStartIncluding": "2.2.0"
},
{
"criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B0BE662F-4DB9-457E-8C04-F16081946A64",
"versionEndExcluding": "2.4.1",
"versionStartIncluding": "2.4"
}
],
"operator": "OR"
}
]
}
]