CVE-2022-31065 Cross site scripting vulnerability for private chat in bigbluebutton
Attackers can execute malicious JavaScript on victims' clients via crafted usernames in private chats or session notifications.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2022-31065?
CVE-2022-31065 is a medium-severity cross-site scripting vulnerability in bigbluebutton, published on 27 Jun 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
BigBlueButton is an open source web conferencing system. In affected versions an attacker can embed malicious JS in their username and have it executed on the victim's client. When a user receives a private chat from the attacker (whose username contains malicious JavaScript), the script gets executed. Additionally when the victim receives a notification that the attacker has left the session. This issue has been patched in version 2.4.8 and 2.5.0. There are no known workarounds for this issue.
Weakness: CWE-79
Which versions are affected by CVE-2022-31065?
It affects 1 product.
Products include Bigbluebutton Bigbluebutton.
How do I fix CVE-2022-31065?
No fix has been published for CVE-2022-31065 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-2022-31065 being exploited?
There is no known exploitation of CVE-2022-31065 in the wild and no public exploit code.
Other vulnerabilities in bigbluebutton
Sources
Also known as GHSA-8m2p-7qv3-qff7.