CVE-2020-25820
MEDIUMCVSS 6.5/10EPSS 8.82%
Last modified
CVE-2020-25820 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 8.82% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Bigbluebutton | Bigbluebutton | < 2.2.27 |
References
- http://packetstormsecurity.com/files/159667/BigBlueButton-2.2.25-File-Disclosure-Server-Side-Request-Forgery.htmlExploit, Third Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/commit/71fe1eac1e5bd73a2cd44bd79c001086b250e435Patch, Third Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/compare/v2.2.26...v2.2.27Release Notes, Third Party Advisory
- https://www.golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-2010-151610.htmlExploit, Third Party Advisory
- https://www.redteam-pentesting.de/advisories/rt-sa-2020-005Third Party Advisory
- http://packetstormsecurity.com/files/159667/BigBlueButton-2.2.25-File-Disclosure-Server-Side-Request-Forgery.htmlExploit, Third Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/commit/71fe1eac1e5bd73a2cd44bd79c001086b250e435Patch, Third Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/compare/v2.2.26...v2.2.27Release Notes, Third Party Advisory
- https://www.golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-2010-151610.htmlExploit, Third Party Advisory
- https://www.redteam-pentesting.de/advisories/rt-sa-2020-005Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-25820?
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.
How severe is CVE-2020-25820?
CVE-2020-25820 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 8.82% probability of exploitation in the next 30 days.
How do I fix CVE-2020-25820?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- One Click Account Takeover in GranolaHow a notification link broke out of Electron and led to a one-click account takeover.
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Are you affected by CVE-2020-25820?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST