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cve[email protected]CVE-2022-29236
HistoryJun 02, 2022 - 12:15 a.m.

CVE-2022-29236

2022-06-0200:15:08
CWE-285
web.nvd.nist.gov
64
10
bigbluebutton
web conferencing
access restriction
cve-2022-29236
security vulnerability
patch

CVSS2

4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:S/C:P/I:N/A:N

CVSS3

4.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

4.5

Confidence

High

EPSS

0.001

Percentile

33.3%

BigBlueButton is an open source web conferencing system. Starting in version 2.2 and prior to versions 2.3.18 and 2.4-rc-6, an attacker can circumvent access restrictions for drawing on the whiteboard. The permission check is inadvertently skipped on the server, due to a previously introduced grace period. The attacker must be a meeting participant. The problem has been patched in versions 2.3.18 and 2.4-rc-6. There are currently no known workarounds.

Affected configurations

Vulners
NVD
Node
bigbluebuttonbigbluebuttonRange2.22.3.18
OR
bigbluebuttonbigbluebuttonRange2.4-alpha-12.4-rc-6
VendorProductVersionCPE
bigbluebuttonbigbluebutton*cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*
bigbluebuttonbigbluebutton*cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*

CNA Affected

[
  {
    "vendor": "bigbluebutton",
    "product": "bigbluebutton",
    "versions": [
      {
        "version": ">= 2.2, < 2.3.18",
        "status": "affected"
      },
      {
        "version": ">= 2.4-alpha-1, < 2.4-rc-6",
        "status": "affected"
      }
    ]
  }
]

Social References

More

CVSS2

4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:S/C:P/I:N/A:N

CVSS3

4.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

4.5

Confidence

High

EPSS

0.001

Percentile

33.3%

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