CVE-2020-25820 EXPLOIT
6.5
MEDIUM · CVSS 3.1 · EPSS 10.5% (pctl 96)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 6.5 (MEDIUM, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| EPSS | 10.48% — more likely to be exploited than 96% of all CVEs |
| Weakness | CWE-918 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2020-10-21 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| bigbluebutton | bigbluebutton |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | BigBlueButton 2.2.25 - Arbitrary File Disclosure and Server-Side Request Forgery | 2020-11-18 |
References
- http://packetstormsecurity.com/files/159667/BigBlueButton-2.2.25-File-Disclosure-Server-Side-Request-Forgery.html
- https://github.com/bigbluebutton/bigbluebutton/commit/71fe1eac1e5bd73a2cd44bd79c001086b250e435
- https://github.com/bigbluebutton/bigbluebutton/compare/v2.2.26...v2.2.27
- https://www.golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-2010-151610.html
- https://www.redteam-pentesting.de/advisories/rt-sa-2020-005
- http://packetstormsecurity.com/files/159667/BigBlueButton-2.2.25-File-Disclosure-Server-Side-Request-Forgery.html
- https://github.com/bigbluebutton/bigbluebutton/commit/71fe1eac1e5bd73a2cd44bd79c001086b250e435
- https://github.com/bigbluebutton/bigbluebutton/compare/v2.2.26...v2.2.27
- https://www.golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-2010-151610.html
- https://www.redteam-pentesting.de/advisories/rt-sa-2020-005
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