CVE-2020-12422 Memory corruption in Firefox
A memory corruption vulnerability in Firefox allows attackers to execute arbitrary code or cause a crash via a crafted JPEG image in non-standard configurations.
- 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-2020-12422?
CVE-2020-12422 is a high-severity memory corruption vulnerability in Mozilla Firefox, published on 9 Jul 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
In non-standard configurations, a JPEG image created by JavaScript could have caused an internal variable to overflow, resulting in an out of bounds write, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 78.
Weakness: CWE-787
Which versions are affected by CVE-2020-12422?
It affects 2 products.
Products include Mozilla Firefox, Opensuse Leap.
How do I fix CVE-2020-12422?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-12422 being exploited?
There is no known exploitation of CVE-2020-12422 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-7vm3-8xjm-5j9p, UBUNTU-CVE-2020-12422.