An issue exists in various NETGEAR devices that allows attackers to disclose admin passwords via crafted requests to the web management interface. This vulnerability, classified as high severity with a CVSS score of 8.1, poses significant risk to organizations utilizing affected devices. The bug is remotely exploitable when remote management is enabled, and can also be accessed via LAN or WLAN. Given the potential for unauthorized access, organizations should prioritize patching immediately.
When accessing the web panel, if authentication is canceled and password recovery is not enabled, a user is redirected to a page exposing a password recovery token. Supplying the correct token can grant access to the admin password, making this a critical vulnerability. If password recovery is enabled, the exploit fails as it requires security questions set during the activation of that feature. This persistence ensures that even after disabling recovery options, the exploit remains ineffective.
The risk to organizations includes unauthorized access to sensitive information, leading to potential data breaches or further exploitation of the network. Given the widespread use of these devices, the blast radius for this vulnerability is substantial. As this vulnerability is actively exploited, organizations must implement mitigations swiftly.
Security teams should assess their networks for affected NETGEAR devices and ensure that patches are applied in a timely manner. Additionally, if devices are no longer supported or have reached end-of-life, they should be disconnected from the network to mitigate risks.
Vulnerability Details
CVE-2017-5521 affects multiple NETGEAR devices, including R8500, R8300, R7000, R6400, R7300, R7100LG, R6300v2, WNDR3400v3, WNR3500Lv2, R6250, R6700, R6900, and R8000. The vulnerability allows password disclosure via crafted requests to the web management server. If the remote management option is enabled or the router is accessed over LAN/WLAN, the vulnerability can be exploited. This flaw has a CVSS 3.1 base score of 8.1, indicating a high severity level. The vulnerability was published on January 17, 2017.
Technical Analysis
The root cause of this vulnerability stems from improper handling of authentication and password recovery processes. Attackers can exploit the attack vector through the network with high complexity, as no privileges or user interaction is required for exploitation. The confidentiality, integrity, and availability impacts are all rated as high, indicating a severe threat to the device's security.
Risk & Impact Analysis
Organizations utilizing affected NETGEAR devices face a critical risk of unauthorized access due to this vulnerability. The potential for credential theft and subsequent network breaches makes it imperative for organizations to act swiftly. With a high CVSS score and inclusion in the Known Exploited Vulnerabilities (KEV) catalog, the urgency for remediation is pronounced. Organizations should address this vulnerability in their priority patch cycle to mitigate potential attacks.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
Affected versions include various firmware versions for NETGEAR devices, specifically including but not limited to: R6200, R6300, VEGN2610, AC1450, WNR1000v3, WNDR3700v3, WNDR4000, WNDR4500, D6400, D6220, D6300, D6300B, and DGN2200BV4. Organizations should ensure that they are using the latest firmware versions to mitigate this vulnerability.
Mitigation & Remediation
Organizations should apply updates per vendor instructions immediately. If the affected devices have entered end-of-life, they should be disconnected from the network to prevent exploitation. Additionally, configuration hardening measures should be implemented, including disabling remote management if not needed and ensuring password recovery options are properly secured.
Detection Guidance
Monitoring logs for unusual access attempts to the web management interface can provide indicators of exploitation attempts. Behavioral anomalies, such as unexpected redirection to password recovery pages, should also be investigated. Regular audits of router configurations and access logs are recommended.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2017-5521 lies in its demonstration of the vulnerabilities present in consumer-grade networking equipment. As home and office networks increasingly rely on these devices, the potential for large-scale exploitation grows. Security teams should prioritize understanding the implications of such vulnerabilities and ensure robust defensive practices are in place. For further guidance on strengthening security measures, organizations can refer to resources on penetration testing and vulnerability management.
Organizations should also be aware of the evolving landscape of cybersecurity threats. As attackers continuously adapt their strategies, the need for ongoing security assessments and threat intelligence sharing becomes critical. Utilizing services like application security assessment can help identify weaknesses before they can be exploited.
Ultimately, lessons from this vulnerability should drive organizations to adopt a proactive security posture, ensuring that all devices, particularly those connected to the internet, are regularly updated and monitored for security compliance. For additional insights into overall security strategies, refer to the vulnerability management program design.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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