CVE-2007-3842 in R3000 Enterprise Filter
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the 8e6 R3000 Enterprise Filter before 2.0.05 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors. NOTE: this may be the same as CVE-2007-2970.
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Analysis
by VulDB Data Team • 09/02/2017
The CVE-2007-3842 vulnerability represents a cross-site scripting flaw discovered in the 8e6 R3000 Enterprise Filter product line prior to version 2.0.05. This vulnerability falls under the broader category of CWE-79 Improper Neutralization of Input During Web Page Generation, which specifically addresses the failure to properly sanitize user input before incorporating it into web page content. The affected device operates as a network security appliance designed to filter and monitor enterprise network traffic, making it a critical component in organizational security infrastructure.
The technical nature of this vulnerability stems from insufficient input validation and sanitization mechanisms within the web-based administrative interface of the 8e6 R3000 device. Attackers can exploit this weakness by crafting malicious payloads that contain script code or HTML elements, which then get executed in the context of other users' browsers when they access the compromised administrative interface. The unspecified vectors suggest that the vulnerability may manifest through multiple entry points including but not limited to form fields, URL parameters, or HTTP headers within the device's web management console.
From an operational perspective, this vulnerability poses significant risks to enterprise environments as it allows remote attackers to execute arbitrary code within the browser context of authenticated users. The implications extend beyond simple script injection since the affected device serves as a security filter, meaning that successful exploitation could potentially enable attackers to escalate privileges, steal session cookies, perform unauthorized administrative actions, or redirect users to malicious websites. This creates a dangerous scenario where an attacker could compromise the very device meant to protect the network infrastructure.
The security impact of this vulnerability aligns with ATT&CK technique T1059.007 Command and Scripting Interpreter: JavaScript, as it enables attackers to execute malicious javascript code within user browser sessions. Organizations utilizing this specific security appliance would be particularly vulnerable since the device itself becomes a potential attack vector for lateral movement and privilege escalation. The vulnerability's classification as remote and unauthenticated means that attackers do not require physical access or prior authentication to exploit the flaw, making it especially dangerous in network environments where administrative interfaces are accessible from external networks.
Mitigation strategies should prioritize immediate patching to version 2.0.05 or later, which would address the underlying input validation deficiencies. Network segmentation and access controls should be implemented to restrict access to the device's administrative interface, limiting the attack surface. Additionally, implementing proper input sanitization mechanisms and regular security assessments of network appliances can help prevent similar vulnerabilities from emerging in the future. The vulnerability also underscores the importance of maintaining up-to-date security firmware and conducting regular vulnerability assessments of network infrastructure components, as highlighted in NIST SP 800-40 guidelines for vulnerability management. Organizations should also consider implementing web application firewalls and monitoring for suspicious script injection attempts within their network traffic logs.