Critical severity · published Oct 21, 2020
CVE-2020-27602
BigBlueButton before 2.2.7 does not have a protection mechanism for separator injection in meetingId, userId, and authToken
9.8
CVSS
1.4%
EPSS
No
On KEV
Description
BigBlueButton before 2.2.7 does not have a protection mechanism for separator injection in meetingId, userId, and authToken.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 73% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BI
Bigbluebutton · Bigbluebutton
before 2.2.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-27602
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-27602
Patch
https://github.com/bigbluebutton/bigbluebutton/commit/4bfd924c64da2681f4c037026021f47eb189d717
Release Notes
https://github.com/bigbluebutton/bigbluebutton/compare/v2.2.6...v2.2.7
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