Vulnerability Description
NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the httpd service, which listens on TCP port 80 by default. When parsing the strings file, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. . Was ZDI-CAN-13709.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Netgear | Dc112A Firmware | < 1.0.0.62 |
| Netgear | Dc112A | - |
| Netgear | Ex3700 Firmware | < 1.0.0.94 |
| Netgear | Ex3700 | - |
| Netgear | Ex3800 Firmware | < 1.0.0.94 |
| Netgear | Ex3800 | - |
| Netgear | Ex6120 Firmware | < 1.0.0.66 |
| Netgear | Ex6120 | - |
| Netgear | Ex6130 Firmware | < 1.0.0.46 |
| Netgear | Ex6130 | - |
| Netgear | Ex7000 Firmware | < 1.0.1.106 |
| Netgear | Ex7000 | - |
| Netgear | Ex7500 Firmware | < 1.0.1.76 |
| Netgear | Ex7500 | - |
| Netgear | Mr60 Firmware | < 1.1.6.122 |
| Netgear | Mr60 | - |
| Netgear | Mr80 Firmware | < 1.1.6.10 |
| Netgear | Mr80 | - |
| Netgear | Ms60 Firmware | < 1.1.6.122 |
| Netgear | Ms60 | - |
Related Weaknesses (CWE)
References
- https://kb.netgear.com/000064313/Security-Advisory-for-Pre-Authentication-BufferVendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1274/Third Party Advisory
- https://kb.netgear.com/000064313/Security-Advisory-for-Pre-Authentication-BufferVendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1274/Third Party Advisory
FAQ
What is CVE-2021-34982?
CVE-2021-34982 is a vulnerability with a CVSS score of 8.8 (HIGH). NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations...
How severe is CVE-2021-34982?
CVE-2021-34982 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-2021-34982?
Check the references section above for vendor advisories and patch information. Affected products include: Netgear Dc112A Firmware, Netgear Dc112A, Netgear Ex3700 Firmware, Netgear Ex3700, Netgear Ex3800 Firmware.