CVE-2023-4415 Scanner

The Ruijie RG-EW1200G router is a networking device that provides wireless and wired connectivity for home and small office environments. It supports various networking protocols and security features to ensure a secure and stable connection. The router is designed to offer high-speed internet access, network management, and enhanced security protocols to protect network data. It is commonly used in residential and small business settings for its reliability and ease of use. The identified vulnerability in the firmware version 07161417 r483 allows unauthorized access, posing a significant security risk.

CVE-2023-4415 describes a critical login bypass vulnerability in the Ruijie RG-EW1200G router's firmware. This flaw enables attackers to bypass authentication mechanisms and gain unauthorized access to the router's administrative interface. The vulnerability results from improper authentication checks within the /api/sys/login file. Exploitation of this vulnerability allows remote attackers to perform administrative actions without proper credentials, compromising the router's security and the network it manages.

The login bypass vulnerability is exploited through a crafted POST request to the /api/sys/login endpoint of the router. By manipulating the request parameters, an attacker can trick the system into granting access without valid authentication. The exploit utilizes a specific set of values for username and password fields, along with a hardcoded timestamp, to bypass the login process. This indicates a lack of proper input validation and authentication controls in the router's firmware. The successful exploitation results in an unauthorized user gaining full administrative access to the router.

The exploitation of this vulnerability can lead to severe consequences, including unauthorized access to network settings, modification of router configurations, interception of sensitive information, and potential introduction of malware into the network. Attackers can exploit this vulnerability to compromise connected devices, redirect traffic to malicious sites, or create a foothold within the network for further attacks. The security and privacy of the network and its users are at significant risk due to this vulnerability.

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References

• https://nvd.nist.gov/vuln/detail/CVE-2023-4415
• https://github.com/blakespire/repoforcve/tree/main/RG-EW1200G-logic
• https://vuldb.com/?ctiid.237518
• https://vuldb.com/?id.237518