CVE-2015-8227 in VP9660
Summary
by MITRE
The built-in web server in Huawei VP9660 multi-point control unit with software before V200R001C30SPC700 allows a remote administrator to obtain sensitive information or cause a denial of service via a crafted message.
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Analysis
by VulDB Data Team • 04/18/2018
The vulnerability identified as CVE-2015-8227 affects Huawei VP9660 multi-point control unit devices running software versions prior to V200R001C30SPC700. This represents a critical security flaw within the device's built-in web server implementation that exposes the system to remote exploitation by authenticated administrators. The vulnerability stems from insufficient input validation mechanisms within the web server component, creating a pathway for malicious actors to manipulate system behavior through carefully constructed network messages.
The technical flaw manifests as a lack of proper sanitization and validation of incoming data within the web server's message handling routines. When a remote administrator sends crafted messages to the device, the system fails to adequately validate the message content, allowing for potential information disclosure or denial of service conditions. This weakness falls under the CWE category of insufficient input validation, specifically CWE-20 which addresses "Improper Input Validation" and relates to the broader class of CWE-125 "Out-of-bounds Read" and CWE-476 "NULL Pointer Dereference" when considering the potential impact pathways. The vulnerability demonstrates characteristics consistent with CWE-772 "Missing Release of Resource after Effective Lifetime" as the system may not properly handle malformed messages, leading to resource exhaustion or information leakage.
From an operational impact perspective, this vulnerability creates significant risk for organizations relying on Huawei VP9660 devices for video conferencing and communication infrastructure. The remote administrator access requirement means that even if an attacker cannot directly access the device, they could potentially compromise a legitimate administrator's credentials and exploit this vulnerability to either extract sensitive configuration data, user information, or system credentials. The potential for denial of service represents a particularly concerning aspect as it could disrupt critical communication services, affecting business continuity and potentially compromising security operations. The attack surface extends beyond simple information disclosure to include service availability impacts that could affect mission-critical video conferencing operations.
The vulnerability aligns with several ATT&CK techniques including T1078 "Valid Accounts" for the requirement of remote administrator access, T1105 "Remote File Copy" for potential data exfiltration methods, and T1499 "Endpoint Denial of Service" for the denial of service capabilities. Organizations should prioritize patch management to upgrade to Huawei V200R001C30SPC700 or later versions that contain the necessary security fixes. Network segmentation and access controls should be implemented to limit exposure of these devices to untrusted networks. Additionally, monitoring for unusual traffic patterns or authentication attempts on the web server ports could help detect exploitation attempts. Regular security assessments and vulnerability scanning should be conducted to identify similar issues within the broader network infrastructure.
The root cause analysis reveals that this vulnerability represents a failure in secure coding practices within the web server implementation. Proper input validation should have been implemented to sanitize all incoming data before processing, including length checking, character validation, and protocol compliance verification. The absence of these defensive measures creates a pathway for attackers to manipulate the system's normal operation through crafted payloads that exploit the lack of proper validation controls. This vulnerability highlights the importance of applying the principle of least privilege and defense in depth for network infrastructure devices, particularly those with web-based management interfaces that are inherently exposed to external threats.