Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Zyxel | ATP series firmware | 5.10 through 5.36 | — |
| Zyxel | USG FLEX series firmware | 5.00 through 5.36 | — |
| Zyxel | USG FLEX 50(W) series firmware | 5.10 through 5.36 | — |
| Zyxel | USG20(W)-VPN series firmware | 5.10 through 5.36 | — |
| Zyxel | VPN series firmware | 5.00 through 5.36 | — |
Advisories 1
- WID-SEC-2023-1765 Zyxel Firewall: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 17, 2023