This vulnerability allows for reflected Cross-Site Scripting (XSS) in Kelio Visio 1, Kelio Visio X7 and Kelio Visio X4, impacting versions between 3.2C and 5.1K. The flaw resides in the editable ‘username’ parameter of the ‘/PageLoginVisio.do’ endpoint, enabling attackers to inject malicious JavaScript code via POST requests.
With a CVSS score of 6.1, this vulnerability is classified as medium severity. Although the immediate impact may appear limited, it poses a risk to organizations as it could allow attackers to execute arbitrary scripts in the context of the user’s session, potentially leading to data theft or account compromise.
Risk to organizations includes exposure to session hijacking, phishing attacks, and other malicious activities that leverage this vulnerability. Organizations should prioritize patching immediately.
As of now, there are no known exploits available publicly, but the potential for exploitation remains, highlighted by the vulnerability status being marked as deferred. This indicates that the issue is recognized but may not yet have reached critical attention in the cybersecurity community.
Organizations should address this vulnerability within their priority patch cycle to mitigate risks associated with potential exploitation.
Vulnerability Details
The reflected Cross-Site Scripting (XSS) vulnerability in Kelio Visio allows for the execution of arbitrary JavaScript payloads. This vulnerability affects the following versions: Kelio Visio 1, Kelio Visio X7, and Kelio Visio X4, specifically those between versions 3.2C and 5.1K.
The CVSS score of 6.1 indicates a medium severity level due to a low attack complexity and the requirement for user interaction. The vulnerability's classification under CWE-79 (Improper Neutralization of Input During Web Page Generation) highlights its nature as a scripting issue.
This vulnerability was published on February 10, 2025. Organizations should be aware that the absence of known exploits does not diminish the need for immediate action.
Technical Analysis
The root cause of this vulnerability is the application’s failure to adequately sanitize user inputs, particularly in the username field. Attackers can leverage this flaw by crafting a malicious POST request that injects JavaScript code into the application.
The attack vector is network-based, requiring no privileges for execution but necessitating user interaction as the attack relies on the user accessing a specially crafted URL. The attack complexity is low, allowing for easy exploitation by attackers.
The impact on confidentiality and integrity is categorized as low, while availability is not affected. Organizations should implement appropriate measures to sanitize and validate user inputs to prevent such vulnerabilities.
Risk & Impact Analysis
Real-world deployment risk includes exposure to XSS attacks, which can lead to session hijacking or data theft. The potential blast radius is significant as XSS vulnerabilities can be exploited across multiple user sessions. Organizations need to understand that successful exploitation could result in unauthorized access to sensitive information.
Given the CVSS score of 6.1 and the fact that this vulnerability does not currently appear in the Known Exploited Vulnerabilities (KEV) catalog, organizations should treat this vulnerability with a medium level of urgency. It is advised that remediation be scheduled promptly.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of Kelio Visio include 1, X7, and X4, specifically those in the range from 3.2C to 5.1K. Organizations running these versions should take immediate action to patch or upgrade their systems.
Mitigation & Remediation
Organizations should apply patches or updates provided by the vendor to remediate this vulnerability. If no patch is currently available, consider implementing workarounds such as input validation and sanitization on the affected endpoints.
Configuration hardening should be prioritized, alongside monitoring for unusual behavior that could indicate exploitation attempts. Organizations may also benefit from performing a security assessment to evaluate the effectiveness of their defenses against this type of attack.
To validate the effectiveness of these measures, organizations should consider penetration testing to identify any remaining vulnerabilities.
Detection Guidance
To detect potential exploitation attempts, organizations should monitor logs for unusual POST requests, particularly those targeting the ‘/PageLoginVisio.do’ endpoint.
Behavioral anomalies in user sessions should also be investigated promptly. Network signatures indicating XSS payloads can serve as valuable indicators of attempted attacks.
AppSecure Threat Intelligence Insight
This vulnerability highlights the importance of input validation in web applications. Security teams should take this opportunity to review their security posture and ensure that adequate measures are in place to prevent similar vulnerabilities.
Furthermore, organizations should stay informed about emerging trends in web application vulnerabilities and consider implementing comprehensive security programs that include regular assessments.
For further insights into security strategies, organizations may find the following resources useful: penetration testing methodology, vulnerability management program design, and API security best practices to enhance overall security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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