CVE-2009-4197 in Mt882 Modem
Summary
by MITRE
rpwizPppoe.htm in Huawei MT882 V100R002B020 ARG-T running firmware 3.7.9.98 contains a form that does not disable the autocomplete setting for the password parameter, which makes it easier for local users or physically proximate attackers to obtain the password from web browsers that support autocomplete.
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Analysis
by VulDB Data Team • 11/14/2024
The vulnerability identified as CVE-2009-4197 affects Huawei MT882 V100R002B020 ARG-T devices running firmware version 3.7.9.98 and specifically targets the rpwizPppoe.htm web interface component. This issue represents a significant security flaw in the device's web-based configuration interface that undermines the confidentiality of administrative credentials. The vulnerability resides within the password input field of a PPPoE configuration form, where the autocomplete attribute has not been properly disabled, creating an exploitable condition that compromises user authentication security.
The technical flaw manifests through improper HTML form implementation where the password field lacks the autocomplete="off" attribute declaration. This allows web browsers to automatically populate the password field with previously entered values from the browser's password management system. The vulnerability classification aligns with CWE-621, which addresses improper disabling of autocomplete functionality for password fields, and CWE-312, which covers exposure of sensitive information through improper data handling. The flaw essentially creates a passive information disclosure mechanism that operates without requiring any special privileges or network access beyond what is already available to local users or those with physical proximity to the device.
The operational impact of this vulnerability extends beyond simple credential exposure, as it creates a persistent security risk for network administrators who may unknowingly store their credentials in browser password managers. Local users with access to the device can exploit this weakness to retrieve administrative passwords without requiring any sophisticated attack techniques or network-based exploitation methods. Physically proximate attackers can similarly leverage this vulnerability to obtain administrative credentials, making it particularly concerning for devices deployed in shared or unsecured environments. The vulnerability affects the principle of least privilege by providing unauthorized access to administrative functions through simple browser-based reconnaissance.
The implications of this vulnerability align with several ATT&CK tactics including credential access and privilege escalation, where attackers can obtain administrative credentials through passive means rather than active exploitation. Organizations using Huawei MT882 devices should consider this vulnerability as part of their broader security posture assessment, particularly in environments where physical security controls may be insufficient. The vulnerability demonstrates the importance of proper input validation and form security implementation in web-based management interfaces. Mitigation strategies should include immediate firmware updates from Huawei, manual configuration of the affected web interface to disable autocomplete functionality, and implementation of additional access controls such as IP whitelisting for administrative interfaces. Security teams should also conduct regular audits of web application configurations to identify similar autocomplete vulnerabilities across all network infrastructure devices.