CVE-2020-27608 Cross-site scripting in n/a
Attackers can execute arbitrary scripts in victim browsers by uploading malicious presentations served without proper Content-Type headers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-27608?
CVE-2020-27608 is a medium-severity cross-site scripting vulnerability in n/a, published on 21 Oct 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
In BigBlueButton before 2.2.28 (or earlier), uploaded presentations are sent to clients without a Content-Type header, which allows XSS, as demonstrated by a .png file extension for an HTML document.
Weakness: CWE-79
Which versions are affected by CVE-2020-27608?
It affects 1 product.
Products include Bigbluebutton Bigbluebutton.
How do I fix CVE-2020-27608?
No fix has been published for CVE-2020-27608 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2020-27608 being exploited?
There is no known exploitation of CVE-2020-27608 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-43wq-r34m-56ch.