Separator Injection Vulnerability in BigBlueButton by BigBlueButton Inc.
CVE-2020-27602

9.8CRITICAL

Key Information:

Vendor

Bigbluebutton

Status
Bigbluebutton
Vendor
CVE Published:
29 September 2022

What is CVE-2020-27602?

BigBlueButton versions prior to 2.2.7 are susceptible to a separator injection vulnerability. This flaw occurs due to the lack of a protective mechanism in handling input values such as meetingId, userId, and authToken. Attackers could exploit this weakness to inject malicious data, potentially compromising session integrity and leading to unauthorized access within the application. Users are advised to upgrade to version 2.2.7 or later to mitigate the risks associated with this vulnerability.

References

https://github.com/bigbluebutton/bigbluebutton/compare/v2...
x_refsource_MISC
https://github.com/bigbluebutton/bigbluebutton/commit/4bf...
x_refsource_MISC

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.