CVE-2008-4876 in VOIP841 DECT Phone
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the web server component in Philips Electronics VOIP841 DECT Phone with firmware 1.0.4.50 and 1.0.4.80 allows remote attackers to inject arbitrary web script or HTML via the request URL, which is not properly handled in a 404 web error page.
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Analysis
by VulDB Data Team • 10/17/2024
The vulnerability described in CVE-2008-4876 represents a classic cross-site scripting flaw affecting the web server component of Philips Electronics VOIP841 DECT Phone devices running specific firmware versions. This issue manifests within the device's HTTP server implementation where improperly sanitized user input in request URLs leads to injection of malicious scripts during error handling scenarios. The vulnerability specifically occurs when the web server encounters a 404 error condition, which fails to properly escape or filter user-supplied data before rendering it in the error page context.
This XSS vulnerability falls under CWE-79 which defines improper neutralization of input during web page generation as a critical weakness in web applications. The flaw exploits the device's failure to implement proper input validation and output encoding mechanisms when processing HTTP requests that result in 404 error responses. The affected Philips VOIP841 DECT Phone models operate with firmware versions 1.0.4.50 and 1.0.4.80, making them susceptible to exploitation through crafted URLs that trigger the vulnerable error handling path.
The operational impact of this vulnerability extends beyond simple script injection as it provides attackers with the capability to execute malicious code within the context of a user's browser session. This could enable attackers to steal session cookies, perform unauthorized actions on behalf of users, or redirect victims to malicious websites. The attack vector requires no authentication as the vulnerability exists in the publicly accessible web interface of the phone device, making it particularly dangerous in network environments where such devices are exposed to untrusted users or external networks.
From an ATT&CK framework perspective, this vulnerability maps to T1566.001 (Phishing via Social Engineering) and T1059.007 (Command and Scripting Interpreter: JavaScript) as it enables attackers to deliver malicious JavaScript payloads through crafted web requests. The attack chain typically involves sending a malicious URL to a target user who interacts with the vulnerable phone device, causing the XSS payload to execute in their browser context. Network administrators should consider this vulnerability as part of their broader security posture assessment when evaluating the exposure of VoIP infrastructure components within enterprise networks.
Mitigation strategies for this vulnerability include immediate firmware updates from Philips Electronics to address the XSS handling issue in the web server component. Organizations should implement network segmentation to isolate VoIP devices from general user networks and deploy web application firewalls that can detect and block malicious XSS patterns. Additionally, regular security assessments of networked VoIP devices should be conducted to identify similar vulnerabilities in other telephony equipment. The vulnerability also underscores the importance of proper input validation and output encoding practices in embedded web server implementations, particularly in IoT and networked communication devices where security updates may be infrequent or unavailable.