PT-2020-16713 · Bigbluebutton+1 · Bigbluebutton+1

Published 2020-10-21 · Updated 2020-10-29 · CVE-2020-27603

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions BigBlueButton versions prior to 2.2.27

Description The issue is related to an unsafe JODConverter setting in BigBlueButton, which allows LibreOffice document conversions to access external files. This could potentially lead to security issues.

Recommendations For versions prior to 2.2.27, update to version 2.2.27 or later to resolve the issue. As a temporary workaround, consider restricting the use of LibreOffice document conversions until a patch is applied.

Exploit

Fix

Related Identifiers

CVE-2020-27603

Affected Products

Bigbluebutton

Libreoffice

References · 5

• 🔥 https://github.com/hannob/CVE-2020-27603-bbb-libreoffice-poc · Exploit
• 🔥 https://golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-2010-151610.html · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-27603 · Security Note
• https://osv.dev/vulnerability/CVE-2020-27603 · Vendor Advisory
• https://t.me/cibsecurity/15449 · Telegram Post