CVE-2023-43755 Zavio IP Camera Stack-Based Buffer Overflow

Critical 9.8 Published 8 Nov 2023 Updated 16 Jan 2025

Remote attackers can execute arbitrary code on Zavio IP cameras via stack-based buffer overflows in XML parsing.

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

What is CVE-2023-43755?

CVE-2023-43755 is a critical memory corruption vulnerability in Zavio IP Camera B8220, published on 8 Nov 2023. An attacker can exploit it over the internet without logging in, 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 multiple instances of stack-based overflows. During the processing and parsing of certain fields in XML elements 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-2023-43755?

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-2023-43755?

No fix has been published for CVE-2023-43755 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-2023-43755 being exploited?

There is no known exploitation of CVE-2023-43755 in the wild and no public exploit code.

Sources

Also known as GHSA-66rr-phv8-5jpp.