CVE-2020-6804 XSS in Mozilla WebThings Gateway
Reflected XSS in Mozilla WebThings Gateway allows attackers to steal authentication tokens via crafted URLs, potentially leading to full system compromise.
- 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-2020-6804?
CVE-2020-6804 is a high-severity cross-site scripting vulnerability in Mozilla WebThings Gateway, published on 28 Feb 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
A reflected XSS vulnerability exists within the gateway, allowing an attacker to craft a specialized URL which could steal the user's authentication token. When combined with CVE-2020-6803, an attacker could fully compromise the system.
Weakness: CWE-79
Which versions are affected by CVE-2020-6804?
It affects 1 product.
Products include Mozilla Webthings Gateway.
How do I fix CVE-2020-6804?
No fix has been published for CVE-2020-6804 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-2020-6804 being exploited?
There is no known exploitation of CVE-2020-6804 in the wild and no public exploit code.
Other vulnerabilities in Mozilla WebThings Gateway
Sources
Also known as GHSA-wq9f-h6v9-87rm.