CVE-2023-39435 Zavio IP Camera Stack-Based Buffer Overflow

High 8.8 Published 8 Nov 2023 Updated 16 Jan 2025

Remote attackers can execute arbitrary code on Zavio IP cameras due to a stack-based buffer overflow in network request handling.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-39435?

CVE-2023-39435 is a high-severity memory corruption vulnerability in Zavio IP Camera B8220, published on 8 Nov 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Zavio CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, and CD321 IP Cameras

with firmware version M2.1.6.05 are vulnerable to stack-based overflows. During the process of updating certain settings sent from incoming network requests, the product does not sufficiently check or validate allocated buffer size. This may lead to remote code execution.

Weakness: CWE-787, CWE-121

Which versions are affected by CVE-2023-39435?

It affects 11 products.

Products include Zavio B8220 Firmware, Zavio B8520 Firmware, Zavio Cb3211 Firmware, Zavio Cb3212 Firmware, Zavio Cb5220 Firmware, Zavio Cb6231 Firmware and 5 more.

How do I fix CVE-2023-39435?

No fix has been published for CVE-2023-39435 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-39435 being exploited?

There is no known exploitation of CVE-2023-39435 in the wild and no public exploit code.

Sources

Also known as GHSA-75fp-j7f7-j7j8.