CVE-2020-25820

Public Exploit

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 3.95% Top 15%
Third-Party Advisory packetstormsecurity.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory golem.de Third-Party Advisory redteam-pentesting.de
Affected: n/a n/a
Published at:
Updated at:

References

Link 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 third party advisory exploit
http://packetstormsecurity.com/files/159667/BigBlueButton-2.2.25-File-Disclosure-Server-Side-Request-Forgery.html third party advisory exploit
https://github.com/bigbluebutton/bigbluebutton/commit/71fe1eac1e5bd73a2cd44bd79c001086b250e435 third party advisory patch
https://github.com/bigbluebutton/bigbluebutton/compare/v2.2.26...v2.2.27 third party advisory release notes

Frequently Asked Questions

What is the severity of CVE-2020-25820?
CVE-2020-25820 has been scored as a medium severity vulnerability.
How to fix CVE-2020-25820?
To fix CVE-2020-25820, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-25820 being actively exploited in the wild?
It is possible that CVE-2020-25820 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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