CVE-2020-27866
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, …
Impact
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400 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 in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-11355.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Netgear | Ac2100 Firmware | before 1.2.0.76 |
| Netgear | Ac2400 Firmware | before 1.2.0.76 |
| Netgear | Ac2600 Firmware | before 1.2.0.76 |
| Netgear | R6700 Firmware | before 1.2.0.76 |
| Netgear | R6800 Firmware | before 1.2.0.76 |
| Netgear | R6900 Firmware | before 1.2.0.76 |
| Netgear | R7200 Firmware | before 1.2.0.76 |
| Netgear | R7350 Firmware | before 1.2.0.76 |
| Netgear | R7400 Firmware | before 1.2.0.76 |
| Netgear | R7450 Firmware | before 1.2.0.76 |
| Netgear | R6220 Firmware | before 1.1.0.104 |
| Netgear | R6230 Firmware | before 1.1.0.104 |
Weakness classification
References
- NVD record
- CVE.org record
- https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Routers
- https://www.zerodayinitiative.com/advisories/ZDI-20-1451/
- https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Routers
- https://www.zerodayinitiative.com/advisories/ZDI-20-1451/