CVE-2023-6103 in RX 1500
Summary
by MITRE • 11/13/2023
A vulnerability has been found in Intelbras RX 1500 1.1.9 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /WiFi.html of the component SSID Handler. The manipulation leads to cross site scripting. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-245065 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 12/06/2023
The vulnerability identified as CVE-2023-6103 represents a critical cross site scripting flaw in Intelbras RX 1500 wireless access point firmware version 1.1.9. This security weakness resides within the SSID Handler component of the device's web interface, specifically affecting the /WiFi.html file that manages wireless network configuration parameters. The vulnerability's classification as problematic indicates a significant security risk that could compromise the integrity and confidentiality of network operations. The affected device operates as a wireless access point that manages SSID configurations, making it a prime target for attackers seeking to exploit web interface vulnerabilities that could lead to broader network compromise.
The technical implementation of this XSS vulnerability stems from inadequate input validation and output sanitization within the SSID Handler component. When users interact with the /WiFi.html web page to configure wireless network settings, the system fails to properly sanitize user-supplied data before incorporating it into web responses. This allows attackers to inject malicious script code through parameters related to SSID configuration that are processed by the vulnerable component. The flaw manifests when the device renders web content without adequately escaping special characters or implementing proper content security policies, enabling attackers to execute arbitrary JavaScript code within the context of the victim's browser session. This vulnerability directly maps to CWE-79 which defines cross site scripting as the improper handling of untrusted data in web applications.
The operational impact of this vulnerability extends beyond simple script execution as it provides attackers with the capability to perform session hijacking, steal sensitive configuration data, and potentially gain unauthorized access to the wireless network. Since the attack can be launched remotely without requiring physical access to the device, threat actors can exploit this weakness from anywhere on the internet. The disclosed exploit demonstrates that malicious actors can manipulate the SSID configuration interface to inject persistent scripts that could redirect users to malicious sites, steal cookies, or even modify network settings. This remote exploitation capability significantly amplifies the risk as it allows for large-scale attacks against multiple devices without requiring direct network access or specialized equipment. The vulnerability's potential for use in persistent attacks makes it particularly dangerous in enterprise environments where wireless access points serve as critical infrastructure components.
The lack of vendor response to early disclosure attempts creates additional operational concerns for affected organizations, as it indicates potential gaps in the security supply chain and vendor support. Organizations using Intelbras RX 1500 devices should immediately implement network segmentation and access controls to limit exposure to this vulnerability. Network administrators should consider disabling unnecessary web management interfaces and implementing web application firewalls to detect and prevent XSS attack attempts. The vulnerability's classification as publicly disclosed (VDB-245065) means that threat actors are actively exploiting this weakness, making immediate remediation essential. Security teams should also monitor for network traffic patterns that might indicate exploitation attempts and consider implementing intrusion detection systems specifically configured to detect XSS attack signatures. Organizations should prioritize firmware updates from Intelbras once available, though the vendor's lack of response suggests that alternative mitigation strategies may be necessary while awaiting official patches.
The broader implications of this vulnerability extend to wireless network security practices and highlight the importance of proper input validation in network device management interfaces. This flaw demonstrates that even seemingly benign configuration interfaces can serve as entry points for sophisticated attacks, emphasizing the need for comprehensive security testing of all web-facing components in network infrastructure devices. The vulnerability's existence in a commercial wireless access point also underscores the importance of supply chain security and the need for organizations to maintain awareness of security advisories from multiple sources, as vendor responsiveness may not always meet security requirements. Security professionals should consider implementing security monitoring specifically targeting wireless infrastructure devices and establish procedures for rapid response to similar vulnerabilities in other network equipment.