CVE-2016-2820 Security feature bypass in n/a
Remote attackers can modify Firefox Health Report sharing preferences by exploiting improper origin restrictions in the about:healthreport feature.
- 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
- Available
What is CVE-2016-2820?
CVE-2016-2820 is a medium-severity vulnerability in Mozilla Firefox, published on 30 Apr 2016. 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
The Firefox Health Reports (aka FHR or about:healthreport) feature in Mozilla Firefox before 46.0 does not properly restrict the origin of events, which makes it easier for remote attackers to modify sharing preferences by leveraging access to the remote-report IFRAME element.
Weakness: CWE-284
Which versions are affected by CVE-2016-2820?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2016-2820?
Upgrade to a fixed version.
Is CVE-2016-2820 being exploited?
There is no known exploitation of CVE-2016-2820 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-9f9w-vwq3-c9fh, UBUNTU-CVE-2016-2820.