CVE-2020-25820 Server-side request forgery in n/a
Authenticated attackers can read local files and perform SSRF attacks via crafted URLs in uploaded Office documents.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-25820?
CVE-2020-25820 is a medium-severity server-side request forgery vulnerability in n/a, published on 21 Oct 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-918
Which versions are affected by CVE-2020-25820?
It affects 1 product.
Products include Bigbluebutton Bigbluebutton.
How do I fix CVE-2020-25820?
No fix has been published for CVE-2020-25820 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2020-25820 being exploited?
There is no known exploitation of CVE-2020-25820 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in n/a
Sources
Also known as GHSA-5mrj-23w8-w7hx.