Netgear RBS50 LAN Interface funjsq_access_token command injection

Summaryinfo

A vulnerability categorized as critical has been discovered in Netgear R6230, R6260, R7000, R8900, R9000, XR300, RBR20, RBR50, RBS20 and RBS50. Affected by this vulnerability is an unknown functionality of the component LAN Interface. Executing a manipulation of the argument funjsq_access_token can lead to command injection. This vulnerability appears as CVE-2022-40619. The attacker needs to be present on the local network. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Netgear R6230, R6260, R7000, R8900, R9000, XR300, RBR20, RBR50, RBS20 and RBS50. This vulnerability affects an unknown functionality of the component LAN Interface. The manipulation of the argument funjsq_access_token with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

FunJSQ, a third-party module integrated on some NETGEAR routers and Orbi WiFi Systems, exposes an HTTP server over the LAN interface of affected devices. This interface is vulnerable to unauthenticated arbitrary command injection through the funjsq_access_token parameter. This affects R6230 before 1.1.0.112, R6260 before 1.1.0.88, R7000 before 1.0.11.134, R8900 before 1.0.5.42, R9000 before 1.0.5.42, and XR300 before 1.0.3.72 and Orbi RBR20 before 2.7.2.26, RBR50 before 2.7.4.26, RBS20 before 2.7.2.26, and RBS50 before 2.7.4.26.

The advisory is shared for download at kb.netgear.com. This vulnerability was named CVE-2022-40619 since 09/12/2022. The exploitation appears to be easy. The attack can only be done within the local network. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 03/09/2026). The MITRE ATT&CK project declares the attack technique as T1202.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Wireless LAN Software

Vendor

• Netgear

Name

• R6230
• R6260
• R7000
• R8900
• R9000
• RBR20
• RBR50
• RBS20
• RBS50
• XR300

License

• commercial

Website

• Vendor: https://www.netgear.com/

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