Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Netgear | Ac2100 Firmware | < 1.2.0.88 |
| Netgear | Ac2100 | - |
| Netgear | Ac2400 Firmware | < 1.2.0.88 |
| Netgear | Ac2400 | - |
| Netgear | Ac2600 Firmware | < 1.2.0.88 |
| Netgear | Ac2600 | - |
| Netgear | D7000V1 Firmware | < 1.0.1.80 |
| Netgear | D7000V1 | - |
| Netgear | R6220 Firmware | < 1.1.0.110 |
| Netgear | R6220 | - |
| Netgear | R6230 Firmware | < 1.1.0.110 |
| Netgear | R6230 | - |
| Netgear | R6260 Firmware | < 1.1.0.84 |
| Netgear | R6260 | - |
| Netgear | R6330 Firmware | < 1.1.0.84 |
| Netgear | R6330 | - |
| Netgear | R6350 Firmware | < 1.1.0.84 |
| Netgear | R6350 | - |
| Netgear | R6700V2 Firmware | < 1.2.0.88 |
| Netgear | R6700V2 | - |
Related Weaknesses (CWE)
References
- https://kb.netgear.com/000063955/Security-Advisory-for-Authentication-Bypass-VulVendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1051/Third Party AdvisoryVDB Entry
- https://kb.netgear.com/000063955/Security-Advisory-for-Authentication-Bypass-VulVendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1051/Third Party AdvisoryVDB Entry
FAQ
What is CVE-2021-34865?
CVE-2021-34865 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 s...
How severe is CVE-2021-34865?
CVE-2021-34865 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-34865?
Check the references section above for vendor advisories and patch information. Affected products include: Netgear Ac2100 Firmware, Netgear Ac2100, Netgear Ac2400 Firmware, Netgear Ac2400, Netgear Ac2600 Firmware.