OS Command Injection in ZyXEL Communications Corp. products - CVE-2023-28771

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation. A remote unauthenticated attacker can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Affected software

How to mitigate CVE-2023-28771

Links to Public Exploits and PoC-codes

• Exploit #9988 - CVE-2023-28771-PoC (PoC for CVE-2023-28771 based on Rapid7's excellent writeup) (June 14, 2024)
• Exploit #9187 - PoC-CVE-2023-28771 (The script is designed to facilitate testing and exploration of the IKEv2 protocol in vulnerable devices, based on Rapid7's exploitation techniques.) (July 16, 2023)
• Exploit #9100 - Zyxel IKE Packet Decoder Unauthenticated Remote Code Execution (June 9, 2023)

External References

• https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-remote-command-injection-vulnerability-of-firewalls
• https://www.zyxel.com/global/en/support/security-advisories/zyxels-guidance-for-the-recent-attacks-on-the-zywall-devices

Related Security Bulletins

• Multiple vulnerabilitiesin Zyxel firewalls