CVE-2018-18492 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 a crafted web page.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-18492?
CVE-2018-18492 is a critical use after free vulnerability in Canonical Ubuntu Linux, published on 28 Feb 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 after deleting a selection element due to a weak reference to the select element in the options collection. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.
Weakness: CWE-416
Which versions are affected by CVE-2018-18492?
It affects 10 products.
Products include Canonical Ubuntu Linux, Debian Debian Linux, Mozilla Firefox, Mozilla Thunderbird, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server and 4 more.
How do I fix CVE-2018-18492?
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-2018-18492 being exploited?
There is no known exploitation of CVE-2018-18492 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2018-18492, GHSA-wjrm-cvj7-wvjg, UBUNTU-CVE-2018-18492.