CVE-2024-30624 is a stack overflow vulnerability identified in the Tenda FH1205 router firmware version 2.0.0.7(775). The vulnerability resides in the 'urls' parameter processed by the saveParentControlInfo function. A stack overflow occurs when this parameter is improperly handled, allowing an attacker to overwrite the stack memory. This flaw is exploitable remotely over the network without requiring any authentication or user interaction, making it particularly dangerous. The vulnerability is classified under CWE-121 (Stack-based Buffer Overflow), which can lead to arbitrary code execution, denial of service, or system crashes. The CVSS v3.1 base score is 8.8, indicating a high severity level due to the combination of network attack vector, low attack complexity, no privileges required, no user interaction, and full impact on confidentiality, integrity, and availability. No official patches or fixes have been published yet, and no exploits have been observed in the wild. The affected device, Tenda FH1205, is a consumer-grade router widely used in home and small office networks, making the vulnerability relevant to a broad user base. The lack of authentication and user interaction requirements significantly increases the risk of automated exploitation attempts. Attackers could leverage this vulnerability to gain control over the device, intercept or manipulate network traffic, or disrupt network services.

The impact of CVE-2024-30624 is severe for organizations and individuals using the Tenda FH1205 router. Successful exploitation can lead to full compromise of the device, allowing attackers to execute arbitrary code with system-level privileges. This can result in unauthorized access to internal networks, interception of sensitive data, manipulation of network traffic, and disruption of network availability. For businesses, this could mean exposure of confidential information, interruption of critical services, and potential lateral movement within corporate networks. In home environments, attackers could use compromised routers as footholds for broader attacks or as part of botnets. The vulnerability’s remote and unauthenticated nature increases the likelihood of widespread exploitation, especially if automated attack tools emerge. The absence of patches exacerbates the risk, leaving devices exposed. Given the router’s deployment in various regions, the threat could affect a large number of users globally, impacting both privacy and operational continuity.

1. Immediately disable remote management interfaces on the Tenda FH1205 router to prevent external exploitation attempts. 2. Restrict network access to the router’s administrative interfaces to trusted internal IP addresses only. 3. Monitor network traffic for unusual patterns or repeated requests targeting the saveParentControlInfo function or the 'urls' parameter. 4. Employ network intrusion detection/prevention systems (IDS/IPS) with signatures or heuristics to detect exploitation attempts related to stack overflow attacks. 5. Regularly check for firmware updates from Tenda and apply them promptly once a patch addressing this vulnerability is released. 6. Consider replacing vulnerable devices with models from vendors with stronger security track records if immediate patching is not feasible. 7. Educate users and administrators about the risks of exposing router management interfaces to the internet. 8. Implement network segmentation to limit the impact of a compromised router on critical internal systems. 9. Use strong, unique passwords for router administration to reduce the risk of secondary attacks if exploitation occurs. 10. Maintain up-to-date backups of router configurations to facilitate recovery after compromise or firmware updates.