CVE-2024-30570 in R6850
Summary
by MITRE • 04/03/2024
An information leak in debuginfo.htm of Netgear R6850 v1.1.0.88 allows attackers to obtain sensitive information without any authentication required.
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Analysis
by VulDB Data Team • 08/20/2024
The vulnerability identified as CVE-2024-30570 represents a critical information disclosure flaw within the Netgear R6850 router firmware version 1.1.0.88. This issue resides in the debuginfo.htm component which is designed for diagnostic purposes but has been improperly configured to expose sensitive system information to unauthorized users. The vulnerability stems from insufficient access controls and improper input validation within the web interface, allowing any remote attacker to retrieve confidential data without requiring authentication credentials or privileged access. This type of flaw falls under the category of improper access control as defined by CWE-284, where the system fails to properly restrict access to sensitive resources.
The technical implementation of this vulnerability involves the debuginfo.htm page which likely contains system diagnostics, configuration details, and potentially sensitive operational parameters that should remain confidential. When an attacker accesses this page, the server fails to verify the user's authorization status or implement proper authentication mechanisms before serving the debug information. This could include details such as system version numbers, hardware specifications, network configurations, or other operational data that could aid in subsequent attack phases. The vulnerability's impact is amplified by the fact that no authentication is required, making it particularly dangerous as it allows for immediate reconnaissance without any preliminary attack vectors.
From an operational perspective, this information leak creates significant security risks for organizations using affected Netgear R6850 devices. The exposed debug information could provide attackers with detailed insights into the router's internal configuration, firmware versions, and potentially vulnerable components that could be exploited in later stages of an attack. This aligns with ATT&CK technique T1082 which involves discovering system information through reconnaissance activities. The leaked data may include network topology information, device identifiers, firmware build details, and other metadata that could be used to craft more sophisticated attacks targeting specific vulnerabilities within the router's software stack.
The exploitation of this vulnerability typically involves simple web requests to the debuginfo.htm endpoint, making it accessible to any attacker with network connectivity to the device. This unauthenticated access means that the vulnerability can be leveraged by threat actors without requiring initial compromise of user credentials or network access. The information obtained through this leak could potentially be used to identify firmware-specific exploits, understand the router's security posture, or serve as a foundation for more advanced persistent threats. Organizations should consider implementing network segmentation and monitoring for unusual traffic patterns to detect potential exploitation attempts. The vulnerability also highlights the importance of proper security hardening practices and the necessity of disabling or removing debug interfaces in production environments. According to industry best practices and security frameworks, such information disclosure vulnerabilities should be addressed through proper access control mechanisms, input validation, and security configuration reviews. The affected firmware version 1.1.0.88 represents a specific release where this security gap was present, emphasizing the importance of keeping network equipment firmware updated with the latest security patches. Organizations should conduct immediate vulnerability assessments to identify all affected devices and implement temporary mitigations such as firewall rules restricting access to the debug interface until proper firmware updates are deployed. The presence of such vulnerabilities in consumer-grade networking equipment underscores the broader security challenges associated with IoT and network infrastructure devices that often lack proper security hardening by default.