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osvGoogleOSV:CVE-2023-43797
HistoryOct 30, 2023 - 11:15 p.m.

CVE-2023-43797

2023-10-3023:15:08
Google
osv.dev
3
bigbluebutton
guest lobby
xss vulnerability
text sanitizing
open source
virtual classroom
software security

6.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

6.5 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

21.3%

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.

6.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

6.5 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

21.3%

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