CVE-2020-27867

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. When parsing the funjsq_access_token parameter, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11653.

• netgear ac2100 firmware (< 1.2.0.76) • netgear ac2400 firmware (< 1.2.0.76) • netgear ac2600 firmware (< 1.2.0.76) • netgear r6700 firmware (< 1.2.0.76) • netgear r6800 firmware (< 1.2.0.76) • netgear r6900 firmware (< 1.2.0.76) • netgear r7200 firmware (< 1.2.0.76) • netgear r7350 firmware (< 1.2.0.76) • netgear r7400 firmware (< 1.2.0.76) • netgear r7450 firmware (< 1.2.0.76) • netgear r6220 firmware (< 1.1.0.104) • netgear r6230 firmware (< 1.1.0.104) • netgear r6260 firmware (< 1.1.0.78) • netgear r6330 firmware (< 1.1.0.78) • netgear r6350 firmware (< 1.1.0.78) • netgear r6850 firmware (< 1.1.0.78) • netgear r6120 firmware (< 1.0.0.76) • netgear r6020 firmware (< 1.0.0.48) • netgear r6080 firmware (< 1.0.0.48)