CVE-2020-27867: NETGEAR Multiple Routers mini_httpd Command Injection Remote Code Execution Vulnerability
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 minihttpd service, which listens on TCP port 80 by default. When parsing the funjsqaccesstoken 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.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2020-27867?
CVE-2020-27867 is a command injection vulnerability in NETGEAR Multiple Routers that allows network-adjacent attackers to execute arbitrary code on affected installations.
Which routers are affected by CVE-2020-27867?
The routers affected by CVE-2020-27867 include NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400.
Is authentication required to exploit CVE-2020-27867?
Yes, authentication is required to exploit CVE-2020-27867.
What is the severity of CVE-2020-27867?
CVE-2020-27867 has a severity score of 6.8, which is considered high.
How can I fix CVE-2020-27867?
To fix CVE-2020-27867, it is recommended to update the firmware of the affected routers to a version that includes the security patch from NETGEAR.