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CVE-2022-31039— Improper privilege management - Anyone can view room settings in GreenLight

Quick assessment

Affected
bigbluebutton greenlight
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

BigBlueButton是BigBlueButton社区的一套开源的Web会议系统。 BigBlueButton Greenlight 存在安全漏洞，该漏洞源于存在信息泄露问题。攻击者在没有权限的情况下，可以查看任意设置。

CVSS 4.3 · Medium EPSS 0.69% · P51

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2022-31039

Vulnerability Information
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Vulnerability Title
Improper privilege management - Anyone can view room settings in GreenLight
Source: CVE Program / CVE List V5
Vulnerability Description
Greenlight is a simple front-end interface for your BigBlueButton server. In affected versions an attacker can view any room's settings even though they are not authorized to do so. Only the room owner and administrator should be able to view a room's settings. This issue has been patched in release version 2.12.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
BigBlueButton 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
BigBlueButton是BigBlueButton社区的一套开源的Web会议系统。 BigBlueButton Greenlight 存在安全漏洞，该漏洞源于存在信息泄露问题。攻击者在没有权限的情况下，可以查看任意设置。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
bigbluebutton greenlight < 2.12.6 -

II. Public POCs for CVE-2022-31039

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III. Intelligence Information for CVE-2022-31039

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Patches & Fixes for CVE-2022-31039 (1)

Vendor Advisories for CVE-2022-31039 (1)

Same Patch Batch · bigbluebutton · 2022-06-27 · 3 CVEs total

CVE-2022-31064 6.5 MEDIUM Cross site scripting in username that will trigger by sending chat
CVE-2022-31065 6.5 MEDIUM Cross site scripting vulnerability for private chat in bigbluebutton

IV. Related Vulnerabilities

Same product: greenlight
Same vendor: bigbluebutton
Same weakness: CWE-269

V. Comments for CVE-2022-31039

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