CVE-2019-11692 Use after free in Firefox
A use-after-free flaw in Firefox and Thunderbird allows attackers to cause a crash or potentially execute arbitrary code via crafted event listeners.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-11692?
CVE-2019-11692 is a critical use after free vulnerability in Mozilla Firefox, published on 23 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A use-after-free vulnerability can occur when listeners are removed from the event listener manager while still in use, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.
Weakness: CWE-416
Which versions are affected by CVE-2019-11692?
It affects 2 products.
Products include Mozilla Firefox, Mozilla Thunderbird.
How do I fix CVE-2019-11692?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2019-11692 being exploited?
There is no known exploitation of CVE-2019-11692 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as DEBIAN-CVE-2019-11692, GHSA-8h33-8ffg-2jc8, UBUNTU-CVE-2019-11692.