high8.8
CVE-2021-34982
NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Netgear | Dc112a Firmware | before 1.0.0.62 |
| Netgear | Ex3700 Firmware | before 1.0.0.94 |
| Netgear | Ex3800 Firmware | before 1.0.0.94 |
| Netgear | Ex6120 Firmware | before 1.0.0.66 |
| Netgear | Ex6130 Firmware | before 1.0.0.46 |
| Netgear | Ex7000 Firmware | before 1.0.1.106 |
| Netgear | Ex7500 Firmware | before 1.0.1.76 |
| Netgear | Mr60 Firmware | before 1.1.6.122 |
| Netgear | Mr80 Firmware | before 1.1.6.10 |
| Netgear | Ms60 Firmware | before 1.1.6.122 |
| Netgear | Ms80 Firmware | before 1.1.6.10 |
| Netgear | Lax20 Firmware | before 1.1.6.30 |
Weakness classification
References
- NVD record
- CVE.org record
- https://kb.netgear.com/000064313/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Extenders-Routers-and-DSL-Modem-Routers-PSV-2021-0159
- https://www.zerodayinitiative.com/advisories/ZDI-21-1274/
- https://kb.netgear.com/000064313/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Extenders-Routers-and-DSL-Modem-Routers-PSV-2021-0159
- https://www.zerodayinitiative.com/advisories/ZDI-21-1274/