CVE-2020-27604

CVSS V2 Medium 4 CVSS V3 Medium 6.5
Description
BigBlueButton before 2.3 does not implement LibreOffice sandboxing. This might make it easier for remote authenticated users to read the API shared secret in the bigbluebutton.properties file. With the API shared secret, an attacker can (for example) use api/join to join an arbitrary meeting regardless of its guestPolicy setting.
Overview
  • CVE ID
  • CVE-2020-27604
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-10-21T15:15:26
  • Last Modified Date
  • 2020-10-30T14:31:59
Weakness Enumerations
CWE URL
CWE-116 http://cwe.mitre.org/data/definitions/116.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:* 1 OR 2.2.8
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:S/C:P/I:N/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 4
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 6.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://www.golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-2010-151610.html Exploit Third Party Advisory
https://docs.bigbluebutton.org/dev/api.html Product
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-27604
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27604
History
Created Old Value New Value Data Type Notes
2022-05-10 16:21:29 Added to TrackCVE
2022-12-05 00:44:19 2020-10-21T15:15Z 2020-10-21T15:15:26 CVE Published Date updated
2022-12-05 00:44:19 2020-10-30T14:31:59 CVE Modified Date updated
2022-12-05 00:44:19 Analyzed Vulnerability Status updated