CVE-2024-30624 in FH1205
Summary
by MITRE • 03/29/2024
Tenda FH1205 v2.0.0.7(775) has a stack overflow vulnerability in the urls parameter from saveParentControlInfo function.
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Analysis
by VulDB Data Team • 08/29/2024
The vulnerability identified as CVE-2024-30624 affects the Tenda FH1205 v2.0.0.7(775) router firmware, representing a critical stack overflow condition within the saveParentControlInfo function. This issue manifests when processing the urls parameter, creating a potential pathway for remote code execution and system compromise. The flaw resides in the firmware's handling of user-supplied input without proper bounds checking or validation mechanisms, allowing malicious actors to overflow the stack buffer and potentially overwrite critical memory segments.
The technical implementation of this vulnerability stems from inadequate input sanitization within the router's web interface processing logic. When the saveParentControlInfo function receives the urls parameter, it fails to validate the length or content of the input data before copying it into a fixed-size stack buffer. This classic buffer overflow scenario enables attackers to craft malicious payloads that exceed the allocated buffer space, causing unpredictable behavior including stack corruption, program termination, or execution of arbitrary code. The vulnerability specifically targets the router's administrative interface, making it particularly dangerous as it could allow unauthorized users to gain full administrative privileges.
The operational impact of this vulnerability extends beyond simple denial of service scenarios, as it creates multiple attack vectors for threat actors. An attacker could exploit this weakness to execute arbitrary code on the affected device, potentially leading to complete system compromise, data exfiltration, or use of the device as a pivot point for further attacks within a network. The vulnerability affects the router's parental control functionality, which typically requires administrative access, but the stack overflow could enable privilege escalation attacks. This flaw represents a significant risk in enterprise and residential networks where these devices serve as primary network gateways, potentially allowing attackers to establish persistent access points or redirect network traffic.
Mitigation strategies for CVE-2024-30624 should prioritize immediate firmware updates from Tenda, as this represents a known vulnerability requiring vendor-supplied patches. Network administrators should implement network segmentation and access controls to limit exposure of affected devices to untrusted networks. Monitoring for unusual network traffic patterns or unauthorized configuration changes can help detect exploitation attempts. The vulnerability aligns with CWE-121 Stack-based Buffer Overflow, which is categorized under the broader category of CWE-787 Out-of-bounds Write in the CWE dictionary, and represents a common attack pattern documented in the MITRE ATT&CK framework under T1059.007 Command and Scripting Interpreter for Windows. Organizations should also consider implementing intrusion detection systems to monitor for exploitation attempts targeting this specific vulnerability.