A vulnerability classified as problematic has been found in FiberHome AN5506-01A ONU GPON RP2511. Affected is an unknown function of the file /goform/portForwardingCfg of the component Port Forwarding Submenu. The manipulation of the argument pf_Description leads to cross site scripting. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
This vulnerability allows attackers to exploit the affected component, posing a risk to the integrity of the system. With a CVSS score of 4.8, rated as medium severity, organizations must take this issue seriously, as it can potentially lead to unauthorized actions within the affected systems.
Risk to organizations includes potential data exposure through cross-site scripting attacks, which could be executed by remote attackers with high privileges. Organizations should prioritize patching immediately.
Given the nature of this vulnerability and the fact that it has been publicly disclosed, it is crucial for organizations to assess their exposure and implement necessary mitigations to safeguard their systems.
Vulnerability Details
The vulnerability affects FiberHome AN5506-01A ONU GPON RP2511, specifically in the file /goform/portForwardingCfg. The manipulation of the argument pf_Description leads to cross-site scripting (XSS). It has been classified under CWE-79 (Improper Neutralization of Input During Web Page Generation) and CWE-94 (Improper Control of Generation of Code).
The CVSS score of 4.8 indicates a medium severity level, with the attack vector being network-based and the attack complexity rated as low. High privileges are required to exploit this vulnerability, and user interaction is passive.
The vulnerability was published on February 24, 2025. Organizations utilizing affected versions of the FiberHome AN5506-01A ONU GPON RP2511 should take immediate action to mitigate this risk.
Technical Analysis
The root cause of this vulnerability stems from insufficient sanitization of input parameters being processed by the web interface of the affected device. The attack vector is through network interactions where an attacker can remotely manipulate the pf_Description variable.
The attack complexity is low, meaning attackers can execute the exploitation without significant barriers. However, elevated privileges are required for the exploit to be successful, which may limit the number of potential attackers.
User interaction is not required for the exploitation of this vulnerability, which allows attackers to leverage this vulnerability without needing any involvement from legitimate users.
Confidentiality is not impacted, but there is a low impact on integrity. This means that while data may not be stolen, the integrity of the data could be compromised through unauthorized changes.
Risk & Impact Analysis
The real-world risk associated with this vulnerability is significant, especially for organizations that rely on the FiberHome AN5506-01A ONU GPON RP2511 for critical networking operations. Attackers may leverage this vulnerability to inject malicious scripts into web pages viewed by unsuspecting users, leading to potential data theft or further system manipulation.
The blast radius of this vulnerability could be extensive if not mitigated, as it may affect all users accessing services provided by the compromised system. Organizations should assess their current configurations and user access to determine the potential impact of an exploit.
Considering the CVSS score and the lack of vendor response, organizations should address this vulnerability in their priority patch cycle. Immediate action is advised to safeguard against potential exploitation.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions include FiberHome AN5506-01A firmware version RP2511. If version information is missing, organizations should assume all versions prior to vendor patch are at risk.
Mitigation & Remediation
Organizations should prioritize patching immediately to mitigate this vulnerability. Ensure to upgrade to the latest firmware version provided by FiberHome to address the issue. If a patch is not available, consider implementing temporary workarounds such as disabling the affected port forwarding functionality until a resolution is applied.
For ongoing security, organizations should also consider establishing configuration hardening practices, network controls, and continuous monitoring strategies to detect any unauthorized access attempts.
Detection Guidance
To effectively monitor for signs of exploitation, organizations should look for log indicators of abnormal web requests targeting the /goform/portForwardingCfg endpoint. Behavioral anomalies such as unexpected changes to parameters or unauthorized access attempts should be flagged for further analysis.
AppSecure Threat Intelligence Insight
Long-term significance of this vulnerability lies in its ability to serve as a reminder of the importance of securing web interfaces within networking equipment. The exposure of cross-site scripting vulnerabilities in devices like FiberHome AN5506-01A highlights a pattern of insufficient input validation that can lead to severe implications.
Organizations should take lessons from this incident to improve their security posture, particularly in the realm of web application security. Strategic defensive takeaways include regular assessments and updates of firmware, as well as rigorous testing of web interfaces for vulnerabilities.
For more information on penetration testing strategies, organizations may refer to our resources on penetration testing and continuous security assessments.
Additionally, organizations should ensure they stay updated with the latest security trends and best practices by visiting our blog on vulnerability management and application security.
For insights on effective remediation strategies, organizations can explore our comprehensive guide on penetration testing methodology to strengthen their defenses.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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