high8.8
CVE-2021-34865
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of multiple NETGEAR routers.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Netgear | Ac2100 Firmware | before 1.2.0.88 |
| Netgear | Ac2400 Firmware | before 1.2.0.88 |
| Netgear | Ac2600 Firmware | before 1.2.0.88 |
| Netgear | D7000v1 Firmware | before 1.0.1.80 |
| Netgear | R6220 Firmware | before 1.1.0.110 |
| Netgear | R6230 Firmware | before 1.1.0.110 |
| Netgear | R6260 Firmware | before 1.1.0.84 |
| Netgear | R6330 Firmware | before 1.1.0.84 |
| Netgear | R6350 Firmware | before 1.1.0.84 |
| Netgear | R6700v2 Firmware | before 1.2.0.88 |
| Netgear | R6800 Firmware | before 1.2.0.88 |
| Netgear | R6850 Firmware | before 1.1.0.84 |
Weakness classification
References
- NVD record
- CVE.org record
- https://kb.netgear.com/000063955/Security-Advisory-for-Authentication-Bypass-Vulnerability-on-Some-Routers-PSV-2021-0083?article=000063955
- https://www.zerodayinitiative.com/advisories/ZDI-21-1051/
- https://kb.netgear.com/000063955/Security-Advisory-for-Authentication-Bypass-Vulnerability-on-Some-Routers-PSV-2021-0083?article=000063955
- https://www.zerodayinitiative.com/advisories/ZDI-21-1051/