Vulnerability · Published May 3, 2024 · Assigned by zdi

CVE-2023-35721NETGEAR Multiple Routers curl_post Improper Certificate Validation Remote Code Execution Vulnerability

High 8.1

In plain English

A high-severity improper certificate validation 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 1.0% (higher than 63% of all known vulnerabilities).

Severity (CVSS 3.0)8.1High

Exploit odds (30 days)1.0%top 37.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

NETGEAR Multiple Routers curl_post Improper Certificate Validation Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the update functionality, which operates over HTTPS. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-19981.

Affected products (as reported)

Vendor	Product	Versions
NETGEAR	Multiple Routers	1.0.12.120_2.0.83

Weakness: CWE-295 · Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

ZDI-23-893 x_research-advisory
vendor-provided URL vendor-advisory