CVE-2022-38628 Scanner

Linear eMerge E3-Series is a widely used access control system designed to provide comprehensive security management for buildings and facilities. It is predominantly utilized by security companies and IT departments to ensure that only authorized personnel can access sensitive areas. The system integrates seamlessly with various security hardware and software, making it a versatile solution for different organizational needs. Featuring capabilities such as user management and activity logging, it helps organizations maintain a secure environment. Typically used in corporations, governments, and other institutions requiring rigid security protocols, the E3-Series is valued for its reliability and robust features. Its ease of integration and scalability makes it a preferred choice for both small and large-scale deployments.

The vulnerability present in the Linear eMerge E3-Series is an instance of Cross-Site Scripting (XSS). XSS flaws can allow attackers to inject client-side scripts into web pages viewed by other users, which can lead to unauthorized actions and data access. This specific vulnerability can be triggered via the "no" parameter, resulting in script execution in the context of the user's session. Such vulnerabilities typically arise due to improper validation or encoding of user input, making it crucial for system developers to sanitize all inputs effectively. By exploiting this flaw, attackers can execute arbitrary scripts within the browsers of valid users, exposing sensitive data such as cookies. This vulnerability can potentially compromise user sessions and lead to information theft.

Technical details concerning the vulnerability indicate that the affected endpoint is 'ack_log.php', and it is exploited by sending a specially crafted POST request. The parameter "no" is where the harmful script is inserted, allowing the execution of arbitrary scripts, like displaying cookies through alert functions. The vulnerability is contingent on the system's failure to escape script tags effectively. Attackers can manipulate these inputs to perform malicious operations upon message receipt. Successful script injection could leverage document properties, such as session details, to compromise user accounts and escalate privileges. Consequently, the presence of this XSS vulnerability can significantly weaken the system's security posture.

Exploiting the XSS vulnerability in the Linear eMerge E3-Series can have severe consequences. It enables attackers to perform actions as a logged-in user, potentially leading to unauthorized access and manipulation of sensitive data. Attackers may steal session cookies, hijack sessions, or manipulate content displayed to the user. Over time, such exploits could lead to unauthorized data changes, breaches of confidential data, or a full-scale compromise of system integrity. Moreover, it poses a risk to the credibility of system security and could deter users from trusting web-based services of the affected entity. Mitigating these effects requires prompt identification and remediation of the vulnerability to restore system security and reliability.

REFERENCES

• https://github.com/omarhashem123/Security-Research/blob/main/CVE-2022-38628/CVE-2022-38628.txt
• https://nvd.nist.gov/vuln/detail/CVE-2022-38628