CVE-2021-29979 Cross-site scripting in Hubs Cloud
Attackers can execute JavaScript in the primary hosting domain by sharing malicious HTML or JS content, potentially compromising user sessions.
- 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-2021-29979?
CVE-2021-29979 is a medium-severity cross-site scripting vulnerability in Mozilla Hubs Cloud, published on 2 Aug 2021. 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
Hubs Cloud allows users to download shared content, specifically HTML and JS, which could allow javascript execution in the Hub Cloud instance’s primary hosting domain.*. This vulnerability affects Hubs Cloud < mozillareality/reticulum/1.0.1/20210618012634.
Weakness: CWE-79
Which versions are affected by CVE-2021-29979?
It affects 1 product.
Products include Mozilla Hubs Cloud.
How do I fix CVE-2021-29979?
No fix has been published for CVE-2021-29979 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-2021-29979 being exploited?
There is no known exploitation of CVE-2021-29979 in the wild and no public exploit code.
Sources
Also known as GHSA-523p-mj64-2h68.