CVE-2022-2030
Description
A directory traversal vulnerability caused by specific character sequences within an improperly sanitized URL was identified in some CGI programs of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN series firmware versions 4.30 through 5.30, USG/ZyWALL series firmware versions 4.11 through 4.72, that could allow an authenticated attacker to access some restricted files on a vulnerable device.
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| zyxel zywall_110_firmware | 4.30 ≤ v ≤ 5.30 | — |
| zyxel usg_flex_100w_firmware | 4.50 ≤ v ≤ 5.30 | — |
| zyxel usg_flex_200_firmware | 4.50 ≤ v ≤ 5.30 | — |
| zyxel usg_flex_500_firmware | 4.50 ≤ v ≤ 5.30 | — |
| zyxel usg_flex_700_firmware | 4.50 ≤ v ≤ 5.30 | — |
| zyxel usg_flex_50w_firmware | 4.20 ≤ v ≤ 5.30 | — |
| zyxel usg20w-vpn_firmware | 4.20 ≤ v ≤ 5.30 | — |
| zyxel atp800_firmware | 4.32 ≤ v ≤ 5.30 | — |
| zyxel atp700_firmware | 4.32 ≤ v ≤ 5.30 | — |
| zyxel atp500_firmware | 4.32 ≤ v ≤ 5.30 | — |
| zyxel atp200_firmware | 4.32 ≤ v ≤ 5.30 | — |
| zyxel atp100w_firmware | 4.32 ≤ v ≤ 5.30 | — |
| zyxel atp100_firmware | 4.32 ≤ v ≤ 5.30 | — |
| zyxel vpn1000_firmware | 4.30 ≤ v ≤ 5.30 | — |
| zyxel vpn300_firmware | 4.30 ≤ v ≤ 5.30 | — |
| zyxel vpn100_firmware | 4.30 ≤ v ≤ 5.30 | — |
| zyxel vpn50_firmware | 4.30 ≤ v ≤ 5.30 | — |
| zyxel usg20-vpn_firmware | 4.30 ≤ v ≤ 5.30 | — |
| zyxel usg_2200-vpn_firmware | 4.30 ≤ v ≤ 5.30 | — |
| zyxel zywall_310_firmware | 4.30 ≤ v ≤ 5.30 | — |
| zyxel zywall_1100_firmware | 4.30 ≤ v ≤ 5.30 | — |
| zyxel usg40_firmware | 4.20 ≤ v ≤ 4.72 | — |
| zyxel usg40w_firmware | 4.20 ≤ v ≤ 4.72 | — |
| zyxel usg60_firmware | 4.20 ≤ v ≤ 4.72 | — |
| zyxel usg60w_firmware | 4.20 ≤ v ≤ 4.72 | — |
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