CVE-2021-34865
High
Description
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root. Was ZDI-CAN-13313.
SeverityHigh
CVSS8.8
Exploit probability88. percentile3.1%
Product
Netgear Ac2100 Firmware
PublishedJan 25, 2022
First seenJan 25, 2022
Weakness typeCWE-287Improper authentication
How to fix
Update
- netgear ac2100_firmware1.2.0.88 or later
- netgear ac2400_firmware1.2.0.88 or later
- netgear ac2600_firmware1.2.0.88 or later
- netgear d7000v1_firmware1.0.1.80 or later
- netgear r6220_firmware1.1.0.110 or later
- netgear r6230_firmware1.1.0.110 or later
- netgear r6260_firmware1.1.0.84 or later
- netgear r6330_firmware1.1.0.84 or later
- netgear r6350_firmware1.1.0.84 or later
- netgear r6700v2_firmware1.2.0.88 or later
- netgear r6800_firmware1.2.0.88 or later
- netgear r6850_firmware1.1.0.84 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| netgear ac2100_firmware | v < 1.2.0.88 | 1.2.0.88 |
| netgear ac2400_firmware | v < 1.2.0.88 | 1.2.0.88 |
| netgear ac2600_firmware | v < 1.2.0.88 | 1.2.0.88 |
| netgear d7000v1_firmware | v < 1.0.1.80 | 1.0.1.80 |
| netgear r6220_firmware | v < 1.1.0.110 | 1.1.0.110 |
| netgear r6230_firmware | v < 1.1.0.110 | 1.1.0.110 |
| netgear r6260_firmware | v < 1.1.0.84 | 1.1.0.84 |
| netgear r6330_firmware | v < 1.1.0.84 | 1.1.0.84 |
| netgear r6350_firmware | v < 1.1.0.84 | 1.1.0.84 |
| netgear r6700v2_firmware | v < 1.2.0.88 | 1.2.0.88 |
| netgear r6800_firmware | v < 1.2.0.88 | 1.2.0.88 |
| netgear r6850_firmware | v < 1.1.0.84 | 1.1.0.84 |
| netgear r6900v2_firmware | v < 1.2.0.88 | 1.2.0.88 |
| netgear r7200_firmware | v < 1.2.0.88 | 1.2.0.88 |
| netgear r7350_firmware | v < 1.2.0.88 | 1.2.0.88 |
| netgear r7400_firmware | v < 1.2.0.88 | 1.2.0.88 |
| netgear r7450_firmware | v < 1.2.0.88 | 1.2.0.88 |
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