JODConverter Setting Vulnerability in BigBlueButton by BigBlueButton Inc.
CVE-2020-27603

7.5HIGH

Key Information:

Vendor

Bigbluebutton

Status
Bigbluebutton
Vendor
CVE Published:
21 October 2020

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 26%

What is CVE-2020-27603?

The vulnerability in BigBlueButton prior to version 2.2.27 stems from an unsafe configuration of JODConverter. This weakness allows LibreOffice document conversions to inadvertently access external files, potentially exposing sensitive data to unauthorized users. Proper security measures are crucial to mitigate risks associated with this flaw.

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Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2020-27603-bbb-libreoffice-poc
Created by hannob

References

https://www.golem.de/news/big-blue-button-das-grosse-blau...
x_refsource_MISC

EPSS Score

26% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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