CVE-2023-29543 Use after free in Firefox
An attacker can trigger a use-after-free in the debugger vector, potentially leading to memory corruption and arbitrary code execution.
- 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-2023-29543?
CVE-2023-29543 is a high-severity use after free vulnerability in Mozilla Firefox, published on 2 Jun 2023. 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
An attacker could have caused memory corruption and a potentially exploitable use-after-free of a pointer in a global object's debugger vector. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.
Which versions are affected by CVE-2023-29543?
It affects 3 products.
Products include Mozilla Firefox, Mozilla Firefox Mobile, Mozilla Focus.
How do I fix CVE-2023-29543?
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-2023-29543 being exploited?
There is no known exploitation of CVE-2023-29543 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-6r82-wmjx-mx6j, UBUNTU-CVE-2023-29543.