Executive Summary

This vulnerability involves sensitive data exposure in ZTE ZXHN H298A 1.1 and H108N 2.6 routers. By sending a specially crafted request to the router's web interface, an attacker can obtain sensitive device and account information. This may include the administrator password and WLAN pre-shared key (PSK), which can allow the attacker to bypass authentication and compromise the network.

In some firmware versions, the exposure might be limited to partial identifiers such as the device serial number, ESSID, or MAC addresses.

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Impact Analysis

The vulnerability can lead to unauthorized access to the router's administrative interface and wireless network. An attacker who exploits this flaw can obtain the administrator password and WLAN PSK, enabling them to bypass authentication controls.

This can result in network compromise, allowing the attacker to intercept, modify, or disrupt network traffic, potentially leading to further attacks on connected devices.

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Compliance Impact

The vulnerability in ZTE ZXHN H298A 1.1 and H108N 2.6 exposes sensitive data such as administrator passwords and WLAN PSKs, which can lead to unauthorized access and network compromise.

Exposure of sensitive credentials and device information can result in violations of data protection standards and regulations like GDPR and HIPAA, which mandate the protection of personal and sensitive information against unauthorized access.

Therefore, this vulnerability could negatively impact compliance by increasing the risk of sensitive data breaches and unauthorized access to protected systems.

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Detection Guidance

This vulnerability can be detected by sending crafted HTTP requests to the web interface of affected ZTE ZXHN H298A 1.1 and H108N 2.6 routers and analyzing the response for sensitive information exposure such as administrator passwords and WLAN PSK.

A possible detection method involves using tools like curl or wget to send requests to the router's web interface and inspecting the response for leaked credentials or device information.

• curl -v http://<router-ip>/ -d '<crafted_request_payload>'
• Analyze the HTTP response for presence of administrator password, WLAN PSK, serial number, ESSID, or MAC addresses.

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Mitigation Strategies

Immediate mitigation steps include restricting access to the router's web interface from untrusted networks, such as disabling remote management or limiting it to trusted IP addresses.

Additionally, updating the router firmware to a version that patches this vulnerability is recommended once available.

Changing all default and exposed credentials after applying mitigations can help prevent unauthorized access.

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