CVE-2024-8394 Use after free in Thunderbird
An attacker can trigger a use-after-free crash in Thunderbird by aborting OTR verification, potentially leading to code execution or denial of service.
- 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-2024-8394?
CVE-2024-8394 is a medium-severity use after free vulnerability in Mozilla Thunderbird, published on 6 Sep 2024. 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
When aborting the verification of an OTR chat session, an attacker could have caused a use-after-free bug leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 128.2.
Weakness: CWE-416
Which versions are affected by CVE-2024-8394?
It affects 1 product.
Products include Mozilla Thunderbird.
How do I fix CVE-2024-8394?
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-2024-8394 being exploited?
There is no known exploitation of CVE-2024-8394 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Thunderbird
Sources
Also known as DEBIAN-CVE-2024-8394, GHSA-688v-74jq-v222.