CVE-2020-27872: netgear ac2100_firmware External Control of Critical State Data

Vulnerability summary

CVE-2020-27872 is a high (CVSS 8.8) External Control of Critical State Data vulnerability in netgear ac2100_firmware. EPSS estimates a 0.90% chance of exploitation in the next 30 days, higher than 58.8% of scored vulnerabilities.

Timeline

1. 04-02-2021
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R7450 1.2.0.62_1.0.1 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. The issue results from improper state tracking in the password recovery process. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-11365.

• CWE-642External Control of Critical State DataThe product stores security-critical state information about its users, or the product itself, in a location that is accessible to unauthorized actors.
• CWE-668Exposure of Resource to Wrong SphereThe product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.