Overview
- Description
- BigBlueButton is an open-source virtual classroom. Prior to versions 2.6.11 and 2.7.0-beta.3, Guest Lobby was vulnerable to cross-site scripting when users wait to enter the meeting due to inserting unsanitized messages to the element using unsafe innerHTML. Text sanitizing was added for lobby messages starting in versions 2.6.11 and 2.7.0-beta.3. There are no known workarounds.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 5.4
- Impact score
- 2.7
- Exploitability score
- 2.3
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- Severity
- MEDIUM
Weaknesses
- security-advisories@github.com
- CWE-79
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E83CAE24-2B29-4265-B5E8-17E89637F0DF",
"versionEndExcluding": "2.6.11"
},
{
"criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.0:alpha1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C05D5D11-75BE-41FA-A62F-61F35B16BA9A"
},
{
"criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.0:alpha2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C23D21AA-EF44-4F61-9775-57E3AF206CEE"
},
{
"criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.0:alpha3:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1E95E50E-3C1E-438A-BAEC-AE0DF69B2937"
},
{
"criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.0:beta1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A7EC2B6A-1A13-40FE-85D6-30D596813394"
},
{
"criteria": "cpe:2.3:a:bigbluebutton:bigbluebutton:2.7.0:beta2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5A7D33D7-AE88-4ED4-82A4-BCFA7E828AD1"
}
],
"operator": "OR"
}
]
}
]