Vulnerability · Published Feb 11, 2021 · Assigned by zdi

CVE-2020-27867

Medium 6.8

In plain English

A medium-severity command injection in Multiple Routers from NETGEAR. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.3% (higher than 84% of all known vulnerabilities).

Severity (CVSS 3.0)6.8Medium

Exploit odds (30 days)2.3%top 16.4% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
NETGEAR	Multiple Routers	firmware version 1.2.0.62_1.0.1

Weakness: CWE-77 · Vector: CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Routers x_refsource_MISC
https://www.zerodayinitiative.com/advisories/ZDI-20-1423/ x_refsource_MISC