CVE-2019-11765 Security feature bypass in Firefox
A compromised content process can trick the parent process into granting attacker-controlled permissions instead of Click to Play, bypassing security prompts.
- 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-2019-11765?
CVE-2019-11765 is a medium-severity vulnerability in Mozilla Firefox, published on 8 Jan 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 compromised content process could send a message to the parent process that would cause the 'Click to Play' permission prompt to be shown. However, due to lack of validation from the parent process, if the user accepted the permission request an attacker-controlled permission would be granted rather than the 'Click to Play' permission. This vulnerability affects Firefox < 70.
Weakness: CWE-276
Which versions are affected by CVE-2019-11765?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2019-11765?
Upgrade to a fixed version.
Is CVE-2019-11765 being exploited?
There is no known exploitation of CVE-2019-11765 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-54vc-64p7-55q5, UBUNTU-CVE-2019-11765.