CVE-2021-33549 UDP Technology/Geutebrück camera devices: Buffer overflow in action parameter leading to RCE

High 7.2 Published 13 Sep 2021 Updated 17 Sep 2024

Attackers can remotely execute arbitrary code on vulnerable IP cameras via a stack-based buffer overflow in the action parameter.

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

What is CVE-2021-33549?

CVE-2021-33549 is a high-severity memory corruption vulnerability in Geutebrück E2 Series, published on 13 Sep 2021. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Multiple camera devices by UDP Technology, Geutebrück and other vendors are vulnerable to a stack-based buffer overflow condition in the action parameter, which may allow an attacker to remotely execute arbitrary code.

Weakness: CWE-121

Which versions are affected by CVE-2021-33549?

It affects 16 products.

Products include Geutebrueck G-Cam Ebc-2110 Firmware, Geutebrueck G-Cam Ebc-2111 Firmware, Geutebrueck G-Cam Ebc-2112 Firmware, Geutebrueck G-Cam Efd-2241 Firmware, Geutebrueck G-Cam Efd-2250 Firmware, Geutebrueck G-Cam Efd-2251 Firmware and 10 more.

How do I fix CVE-2021-33549?

No fix has been published for CVE-2021-33549 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-2021-33549 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-33549 exists.

Public exploit code: 1 Metasploit module.

Sources

Also known as GHSA-w6hr-fq55-vx95.