A critical vulnerability has been identified in the SonicWall SonicOS management access. Continue reading this Cybersecurity Threat Advisory to learn about this vulnerability and recommendations to secure your environment.
What is the threat?
CVE-2024-40766, a critical vulnerability in the management interface of SonicOS, stems from improper access validation, allowing threat actors to execute code on the target system to gain control and possibly exploit the vulnerability. Attackers send specially crafted requests to the device to exploit this vulnerability. If these requests are successful, the attacker could execute arbitrary code on the firewall, leading to full compromise of the device.
Why is it noteworthy?
This type of remote code execution (RCE) vulnerability can pose a critical security risk to the network. With the successful implementation of the codes, the attacker will have the ability to bypass security controls, monitor or alter network traffic, and move laterally throughout the environment. If exploited, attackers could disable security features and open backdoors, potentially leading to data breaches, system downtime, and other security incidents.
What is the exposure or risk?
Organizations using the following affected SonicWall firewall devices are at high risk:
- 5.9.2.14-12o
- 6.5.4.14-109n
- 7.0.1-5035 and older
What are the recommendations?
Barracuda MSP recommends the following actions to keep your environment secure:
- Ensure the latest version of SonicOS is used.
- Restrict firewall management to authenticated sources only.
- Disable firewall WAN management for any Internet sources.
Reference
For more in-depth information about the recommendations, please visit the following link:
https://nvd.nist.gov/vuln/detail/CVE-2024-40766
If you have any questions about this Cybersecurity Threat Advisory, please contact Barracuda XDR’s Security Operations Center.
