CVE-2016-1476 in IP Phone 8800
Summary
by MITRE
Cross-site scripting (XSS) vulnerability on Cisco IP Phone 8800 devices with software 11.0 allows remote authenticated users to inject arbitrary web script or HTML via crafted parameters, aka Bug ID CSCuz03024.
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Analysis
by VulDB Data Team • 09/13/2022
The vulnerability identified as CVE-2016-1476 represents a critical cross-site scripting flaw affecting Cisco IP Phone 8800 series devices running software version 11.0. This vulnerability resides within the web interface of these telecommunications devices, creating a significant security risk for organizations that rely on Cisco IP phone infrastructure for their communication systems. The flaw enables remote authenticated attackers to execute malicious code through carefully crafted input parameters, potentially compromising the integrity and confidentiality of the communication environment. The vulnerability was catalogued under Cisco bug ID CSCuz03024, indicating its identification and tracking within Cisco's internal vulnerability management systems.
The technical implementation of this XSS vulnerability stems from insufficient input validation and output encoding within the web interface of the Cisco IP Phone 8800 devices. When authenticated users interact with the device's web management interface, the system fails to properly sanitize user-supplied parameters before incorporating them into dynamically generated web content. This inadequate sanitization allows attackers to inject malicious JavaScript code, HTML tags, or other script-based payloads that execute within the context of other users' browser sessions. The vulnerability specifically targets the device's parameter handling mechanisms, where user input is processed without proper security controls to prevent code injection attacks.
The operational impact of this vulnerability extends beyond simple script execution, as it can lead to complete compromise of the affected devices and potentially broader network infiltration. An attacker who successfully exploits this vulnerability can manipulate the web interface to redirect users to malicious sites, steal session cookies, modify device configurations, or even establish persistent access points within the network. The authenticated nature of the attack means that only users with legitimate access credentials need to be compromised, making the attack vector particularly dangerous in environments where administrative privileges are granted to multiple users. This vulnerability can facilitate privilege escalation attacks and enable attackers to gain unauthorized access to sensitive communication data, potentially affecting voice communications, call routing, and device management functions.
Organizations affected by this vulnerability should implement immediate mitigations including software updates to the latest available firmware versions that contain patches for the XSS flaw. Network segmentation and access controls should be strengthened to limit exposure of these devices to untrusted networks and users. Security monitoring should be enhanced to detect anomalous behavior in the web interface access logs, particularly unusual parameter patterns that might indicate exploitation attempts. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and represents a clear violation of secure coding practices that should prevent user input from being directly incorporated into web output without proper sanitization. From an ATT&CK framework perspective, this vulnerability maps to techniques involving web application exploitation and credential access, potentially enabling lateral movement within network environments where these devices are deployed. Regular security assessments and vulnerability scanning should be conducted to identify similar flaws in other network infrastructure components, as the same architectural patterns that enable this vulnerability may exist in other Cisco products and third-party devices within the network ecosystem.