CVE-2021-43300 Memory corruption in pjsip
An attacker can trigger a stack buffer overflow in the PJSIP library via a crafted filename, 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
- Not needed
- Fix
- Available
What is CVE-2021-43300?
CVE-2021-43300 is a critical memory corruption vulnerability in Debian Debian Linux, published on 16 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Stack overflow in PJSUA API when calling pjsua_recorder_create. An attacker-controlled 'filename' argument may cause a buffer overflow since it is copied to a fixed-size stack buffer without any size validation.
Which versions are affected by CVE-2021-43300?
It affects 2 products.
Products include Debian Debian Linux, Teluu Pjsip.
How do I fix CVE-2021-43300?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-43300 being exploited?
There is no known exploitation of CVE-2021-43300 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2021-43300, DEBIAN-CVE-2021-43300, GHSA-xqp8-79vm-66m9, UBUNTU-CVE-2021-43300.