high
8.8
CWE
78
Advisory Published
Updated

CVE-2023-28767: OS Command Injection

First published: Mon Jul 17 2023(Updated: )

The configuration parser fails to sanitize user-controlled input in the Zyxel ATP series firmware versions 5.10 through 5.36, USG FLEX series firmware versions 5.00 through 5.36,  USG FLEX 50(W) series firmware versions 5.10 through 5.36, USG20(W)-VPN series firmware versions 5.10 through 5.36, and VPN series firmware versions 5.00 through 5.36. An unauthenticated, LAN-based attacker could leverage the vulnerability to inject some operating system (OS) commands into the device configuration data on an affected device when the cloud management mode is enabled.

Credit: security@zyxel.com.tw security@zyxel.com.tw

Affected SoftwareAffected VersionHow to fix
Zyxel Usg 2200-vpn Firmware>=5.00<5.37
Zyxel Usg 2200-vpn
Zyxel Usg Flex 100 Firmware>=5.00<5.37
Zyxel Usg Flex 100
Zyxel Usg Flex 100w Firmware>=5.00<5.37
Zyxel Usg Flex 100w
Zyxel Usg Flex 200 Firmware>=5.00<5.37
Zyxel Usg Flex 200
Zyxel Usg Flex 50 Firmware>=5.00<5.37
Zyxel Usg Flex 50
Zyxel Usg Flex 500 Firmware>=5.00<5.37
Zyxel Usg Flex 500
Zyxel Usg Flex 50w Firmware>=5.00<5.37
Zyxel Usg Flex 50w
Zyxel Usg Flex 700 Firmware>=5.00<5.37
Zyxel Usg Flex 700
Zyxel Zywall Vpn100 Firmware>=5.00<5.37
Zyxel Zywall Vpn100
Zyxel Zywall Vpn2s Firmware>=5.00<5.37
Zyxel Zywall Vpn2s
Zyxel Zywall Vpn300 Firmware>=5.00<5.37
Zyxel Zywall Vpn300
Zyxel Zywall Vpn50 Firmware>=5.00<5.37
Zyxel Zywall Vpn50
Zyxel Zywall Vpn 100 Firmware>=5.00<5.37
Zyxel Zywall Vpn 100
Zyxel Zywall Vpn 300 Firmware>=5.00<5.37
Zyxel Zywall Vpn 300
Zyxel Zywall Vpn 50 Firmware>=5.00<5.37
Zyxel Zywall Vpn 50
Zyxel Usg 20w-vpn Firmware>=5.10<5.37
Zyxel Usg 20w-vpn
Zyxel Zywall Atp100 Firmware>=5.10<5.37
Zyxel Zywall Atp100
Zyxel Zywall Atp100w Firmware>=5.10<5.37
Zyxel Zywall Atp100w
Zyxel Zywall Atp200 Firmware>=5.10<5.37
Zyxel Zywall Atp200
Zyxel Zywall Atp500 Firmware>=5.10<5.37
Zyxel Zywall Atp500
Zyxel Zywall Atp700 Firmware>=5.10<5.37
Zyxel Zywall Atp700
Zyxel Zywall Atp800 Firmware>=5.10<5.37
Zyxel Zywall Atp800

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2023-28767?

    The severity of CVE-2023-28767 is high with a CVSS score of 8.8.

  • Which Zyxel products are affected by CVE-2023-28767?

    Zyxel ATP series firmware versions 5.10 through 5.36, USG FLEX series firmware versions 5.00 through 5.36, USG FLEX 50(W) series firmware versions 5.10 through 5.36, USG20(W)-VPN series firmware versions 5.10 through 5.36 are affected by CVE-2023-28767.

  • How does the configuration parser fail in CVE-2023-28767?

    The configuration parser fails to sanitize user-controlled input in CVE-2023-28767.

  • What is the Common Weakness Enumeration (CWE) for CVE-2023-28767?

    The CWE for CVE-2023-28767 is CWE-78.

  • How can I fix the vulnerability in CVE-2023-28767?

    To fix the vulnerability in CVE-2023-28767, update the firmware of the affected Zyxel products to versions 5.37 or higher.

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