CVE-2023-28771 – Zyxel Multiple Firewalls OS Command Injection Vulnerability

https://notcve.org/view.php?id=CVE-2023-28771

Improper error message handling in Zyxel ZyWALL/USG series firmware versions 4.60 through 4.73, VPN series firmware versions 4.60 through 5.35, USG FLEX series firmware versions 4.60 through 5.35, and ATP series firmware versions 4.60 through 5.35, which could allow an unauthenticated attacker to execute some OS commands remotely by sending crafted packets to an affected device. Zyxel ATP, USG FLEX, VPN, and ZyWALL/USG firewalls allow for improper error message handling which could allow an unauthenticated attacker to execute OS commands remotely by sending crafted packets to an affected device. • https://github.com/benjaminhays/CVE-2023-28771-PoC http://packetstormsecurity.com/files/172820/Zyxel-IKE-Packet-Decoder-Unauthenticated-Remote-Code-Execution.html https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-remote-command-injection-vulnerability-of-firewalls https://attackerkb.com/topics/N3i8dxpFKS/cve-2023-28771/rapid7-analysis • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') •