CVE-2020-25820

CVSS V2 Medium 4 CVSS V3 Medium 6.5
Description
BigBlueButton before 2.2.7 allows remote authenticated users to read local files and conduct SSRF attacks via an uploaded Office document that has a crafted URL in an ODF xlink field.
Overview
  • CVE ID
  • CVE-2020-25820
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-10-21T13:15:12
  • Last Modified Date
  • 2020-10-29T16:22:27
Weakness Enumerations
CWE URL
CWE-918 http://cwe.mitre.org/data/definitions/918.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:* 1 OR 2.2.27
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.redteam-pentesting.de/advisories/rt-sa-2020-005 Third Party Advisory
https://www.golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-2010-151610.html Exploit Third Party Advisory
http://packetstormsecurity.com/files/159667/BigBlueButton-2.2.25-File-Disclosure-Server-Side-Request-Forgery.html Exploit Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/compare/v2.2.26...v2.2.27 Release Notes Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/commit/71fe1eac1e5bd73a2cd44bd79c001086b250e435 Patch Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-25820
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25820
History
Created Old Value New Value Data Type Notes
2022-05-10 16:21:44 Added to TrackCVE
2022-12-05 00:33:34 2020-10-21T13:15Z 2020-10-21T13:15:12 CVE Published Date updated
2022-12-05 00:33:34 2020-10-29T16:22:27 CVE Modified Date updated
2022-12-05 00:33:34 Analyzed Vulnerability Status updated