CVE-2024-53563 is a stored cross-site scripting (XSS) vulnerability identified in the Arcadyan Meteor 2 CPE FG360 Firmware version ETV2.10. Stored XSS vulnerabilities occur when malicious input is permanently stored on the target system, such as in a database or configuration file, and later rendered in a web interface without proper sanitization. In this case, the vulnerability allows an attacker to inject crafted HTML or JavaScript payloads that execute in the context of the victim’s browser when they access the affected web interface. The CVSS 3.1 vector indicates the attack can be performed remotely over the network (AV:N) with low attack complexity (AC:L), but requires privileges (PR:L) and user interaction (UI:R). The scope is changed (S:C), meaning the vulnerability can affect resources beyond the initially vulnerable component. The impact affects confidentiality and integrity at a low level (C:L, I:L) but does not impact availability (A:N). This suggests that an attacker could steal sensitive information accessible via the web interface or manipulate displayed data but cannot disrupt device operation. No patches or public exploits have been reported yet. The vulnerability is categorized under CWE-79, a common weakness for XSS issues. Given the firmware is used in customer premises equipment (CPE), exploitation could lead to targeted attacks on users managing their devices via the web interface.

The primary impact of CVE-2024-53563 is the potential compromise of user confidentiality and integrity through the execution of malicious scripts in the context of the device’s web management interface. Attackers could steal session cookies, credentials, or other sensitive data accessible via the interface, or manipulate displayed information to mislead users. While availability is not affected, the breach of confidentiality and integrity could facilitate further attacks such as privilege escalation or lateral movement within a network. Organizations deploying the Arcadyan Meteor 2 CPE FG360 firmware risk exposure of sensitive configuration data or user credentials, potentially undermining network security. The requirement for some privilege and user interaction limits the ease of exploitation but does not eliminate risk, especially in environments with multiple users or less stringent access controls. The absence of known exploits in the wild reduces immediate threat but underscores the need for proactive mitigation.

To mitigate CVE-2024-53563, organizations should implement the following specific measures: 1) Restrict administrative and user access to the device’s web interface using strong authentication mechanisms and role-based access controls to minimize the number of users with privileges capable of injecting malicious input. 2) Employ network segmentation to isolate CPE devices from critical internal networks, reducing the impact of a compromised device. 3) Monitor and audit web interface inputs and logs for suspicious activity indicative of attempted XSS injection. 4) Apply strict input validation and output encoding on all user-supplied data fields within the device’s web interface, if possible via firmware updates or configuration changes. 5) Regularly check for firmware updates from Arcadyan and apply patches promptly once available. 6) Educate users about the risks of interacting with untrusted content or links that could trigger stored XSS payloads. 7) Consider deploying web application firewalls (WAFs) or intrusion detection systems (IDS) that can detect and block XSS payloads targeting the device’s management interface. These steps go beyond generic advice by focusing on access control, monitoring, and network design tailored to the specific device and vulnerability.