high8.8
CVE-2021-27239
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6400 and R6700 firmware version 1.0.4.98 r…
Impact
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6400 and R6700 firmware version 1.0.4.98 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the upnpd service, which listens on UDP port 1900 by default. A crafted MX header field in an SSDP message can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11851.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Netgear | D6220 Firmware | before 1.0.0.68 |
| Netgear | D6400 Firmware | before 1.0.0.102 |
| Netgear | D7000 Firmware | before 1.0.0.66 |
| Netgear | D8500 Firmware | before 1.0.3.60 |
| Netgear | Dc112a Firmware | before 1.0.0.54 |
| Netgear | Ex7000 Firmware | before 1.0.1.94 |
| Netgear | Ex7500 Firmware | before 1.0.0.72 |
| Netgear | R6250 Firmware | before 1.0.4.48 |
| Netgear | R6300 Firmware | before 1.0.4.50 |
| Netgear | R6400 Firmware | before 1.0.1.68 before 1.0.4.102 |
| Netgear | R6700 Firmware | before 1.0.4.102 |
| Netgear | R6900p Firmware | before 1.3.2.132 |
Weakness classification
References
- NVD record
- CVE.org record
- https://kb.netgear.com/000062820/Security-Advisory-for-Stack-based-Buffer-Overflow-Remote-Code-Execution-Vulnerability-on-Some-Routers-PSV-2020-0432
- https://www.zerodayinitiative.com/advisories/ZDI-21-206/
- https://kb.netgear.com/000062820/Security-Advisory-for-Stack-based-Buffer-Overflow-Remote-Code-Execution-Vulnerability-on-Some-Routers-PSV-2020-0432
- https://www.zerodayinitiative.com/advisories/ZDI-21-206/