CVE-2021-3512
Description
Improper access control vulnerability in Buffalo broadband routers (BHR-4GRV firmware Ver.1.99 and prior, DWR-HP-G300NH firmware Ver.1.83 and prior, HW-450HP-ZWE firmware Ver.1.99 and prior, WHR-300HP firmware Ver.1.99 and prior, WHR-300 firmware Ver.1.99 and prior, WHR-G301N firmware Ver.1.86 and prior, WHR-HP-G300N firmware Ver.1.99 and prior, WHR-HP-GN firmware Ver.1.86 and prior, WPL-05G300 firmware Ver.1.87 and prior, WZR-450HP-CWT firmware Ver.1.99 and prior, WZR-450HP-UB firmware Ver.1.99 and prior, WZR-HP-AG300H firmware Ver.1.75 and prior, WZR-HP-G300NH firmware Ver.1.83 and prior, WZR-HP-G301NH firmware Ver.1.83 and prior, WZR-HP-G302H firmware Ver.1.85 and prior, WZR-HP-G450H firmware Ver.1.89 and prior, WZR-300HP firmware Ver.1.99 and prior, WZR-450HP firmware Ver.1.99 and prior, WZR-600DHP firmware Ver.1.99 and prior, WZR-D1100H firmware Ver.1.99 and prior, FS-HP-G300N firmware Ver.3.32 and prior, FS-600DHP firmware Ver.3.38 and prior, FS-R600DHP firmware Ver.3.39 and prior, and FS-G300N firmware Ver.3.13 and prior) allows remote unauthenticated attackers to bypass access restriction and to start telnet service and execute arbitrary OS commands with root privileges via unspecified vectors.
How to fix
- buffalo bhr-4grv_firmware2.00 or later
- buffalo dwr-hp-g300nh_firmware1.84 or later
- buffalo hw-450hp-zwe_firmware2.00 or later
- buffalo whr-300hp_firmware2.00 or later
- buffalo whr-300_firmware2.00 or later
- buffalo whr-g301n_firmware1.87 or later
- buffalo whr-hp-g300n_firmware2.00 or later
- buffalo whr-hp-gn_firmware1.87 or later
- buffalo wpl-05g300_firmware1.88 or later
- buffalo wzr-450hp-cwt_firmware2.00 or later
- buffalo wzr-450hp-ub_firmware2.00 or later
- buffalo wzr-hp-ag300h_firmware1.76 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| buffalo bhr-4grv_firmware | v < 2.00 | 2.00 |
| buffalo dwr-hp-g300nh_firmware | v < 1.84 | 1.84 |
| buffalo hw-450hp-zwe_firmware | v < 2.00 | 2.00 |
| buffalo whr-300hp_firmware | v < 2.00 | 2.00 |
| buffalo whr-300_firmware | v < 2.00 | 2.00 |
| buffalo whr-g301n_firmware | v < 1.87 | 1.87 |
| buffalo whr-hp-g300n_firmware | v < 2.00 | 2.00 |
| buffalo whr-hp-gn_firmware | v < 1.87 | 1.87 |
| buffalo wpl-05g300_firmware | v < 1.88 | 1.88 |
| buffalo wzr-450hp-cwt_firmware | v < 2.00 | 2.00 |
| buffalo wzr-450hp-ub_firmware | v < 2.00 | 2.00 |
| buffalo wzr-hp-ag300h_firmware | v < 1.76 | 1.76 |
| buffalo wzr-hp-g300nh_firmware | v < 1.84 | 1.84 |
| buffalo wzr-hp-g301nh_firmware | v < 1.84 | 1.84 |
| buffalo wzr-hp-g302h_firmware | v < 1.86 | 1.86 |
| buffalo wzr-hp-g450h_firmware | v < 1.90 | 1.90 |
| buffalo wzr-300hp_firmware | v < 2.00 | 2.00 |
| buffalo wzr-450hp_firmware | v < 2.00 | 2.00 |
| buffalo wzr-600dhp_firmware | v < 2.00 | 2.00 |
| buffalo wzr-d1100h_firmware | v < 2.00 | 2.00 |
| buffalo fs-hp-g300n_firmware | v < 3.33 | 3.33 |
| buffalo fs-600dhp_firmware | v < 3.40 | 3.40 |
| buffalo fs-r600dhp_firmware | v < 3.40 | 3.40 |
| buffalo fs-g300n_firmware | v < 3.14 | 3.14 |
Check your version
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Attack Surface Management
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