CVE-2019-9805 Memory corruption in Firefox
Attackers can exploit uninitialized memory in the Prio library within Firefox to potentially execute code or disclose sensitive information.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-9805?
CVE-2019-9805 is a critical memory corruption vulnerability in Mozilla Firefox, published on 26 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A latent vulnerability exists in the Prio library where data may be read from uninitialized memory for some functions, leading to potential memory corruption. This vulnerability affects Firefox < 66.
Weakness: CWE-908
Which versions are affected by CVE-2019-9805?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2019-9805?
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-2019-9805 being exploited?
There is no known exploitation of CVE-2019-9805 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-fqhq-pc8v-8xch, UBUNTU-CVE-2019-9805.