CVE-2021-35973 Information

Description

NETGEAR WAC104 devices before 1.0.4.15 are affected by an authentication bypass vulnerability in /usr/sbin/mini_httpd allowing an unauthenticated attacker to invoke any action by adding the &currentsetting.htm substring to the HTTP query a related issue to CVE-2020-27866. This directly allows the attacker to change the web UI password and eventually to enable debug mode (telnetd) and gain a shell on the device as the admin limited-user account (however escalation to root is simple because of weak permissions on the /etc/ directory).

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://gynvael.coldwind.pl/?lang=en&id=736 https://kb.netgear.com/000063785/Security-Advisory-for-Authentication-Bypass-on-WAC104-PSV-2021-0075

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8