CVE-2024-23866 in Cups Easy
Summary
by MITRE • 01/26/2024
A vulnerability has been reported in Cups Easy (Purchase & Inventory), version 1.0, whereby user-controlled inputs are not sufficiently encoded, resulting in a Cross-Site Scripting (XSS) vulnerability via /cupseasylive/countrycreate.php, in the countryid parameter. Exploitation of this vulnerability could allow a remote attacker to send a specially crafted URL to an authenticated user and steal their session cookie credentials.
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Analysis
by VulDB Data Team • 02/19/2024
The vulnerability identified as CVE-2024-23866 represents a critical cross-site scripting flaw within Cups Easy (Purchase & Inventory) version 1.0, specifically affecting the /cupseasylive/countrycreate.php endpoint. This issue stems from inadequate input validation and output encoding practices that fail to properly sanitize user-supplied data before it is rendered within the application's web interface. The vulnerability manifests through the countryid parameter, which serves as the attack vector for malicious payload injection.
The technical implementation of this XSS vulnerability occurs when the application processes the countryid parameter without sufficient sanitization or encoding mechanisms. This failure allows malicious actors to inject arbitrary JavaScript code into the application's response, which then executes within the context of other users' browsers who visit the affected page. The vulnerability specifically targets authenticated users, making it particularly dangerous as it leverages existing session contexts to execute malicious code. The attack requires minimal user interaction since the exploit can be delivered via a specially crafted URL that, when visited by an authenticated user, automatically executes the malicious payload.
From an operational perspective, this vulnerability creates significant risk for organizations utilizing Cups Easy software, as successful exploitation enables remote attackers to steal session cookies and potentially gain unauthorized access to user accounts. The attack vector does not require privileged access or complex exploitation techniques, making it particularly attractive to threat actors seeking to compromise user sessions. The stolen session credentials could provide attackers with persistent access to the application, potentially leading to data theft, unauthorized transactions, and further lateral movement within the organization's network infrastructure.
The vulnerability aligns with CWE-79, which describes cross-site scripting flaws resulting from insufficient output encoding or escaping of user-controllable data. This weakness specifically manifests as a reflected XSS vulnerability where the malicious payload is reflected back to the user through the application's response. The attack pattern follows common threat methodologies documented in the MITRE ATT&CK framework under the technique of credential access through session hijacking and web application exploitation. Organizations should consider implementing comprehensive input validation, output encoding, and Content Security Policy headers as defensive measures against such vulnerabilities.
Mitigation strategies for CVE-2024-23866 should include immediate patching of the Cups Easy software to version 1.1 or later, which addresses the input sanitization issues in the countryid parameter handling. Additionally, organizations should implement proper input validation routines that reject or sanitize potentially malicious content before processing user inputs. The application should employ output encoding mechanisms that properly escape special characters in all user-controllable data before rendering it within web pages. Implementing Content Security Policy headers and using secure session management practices can provide additional layers of protection against exploitation attempts. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other web applications within the organization's infrastructure.