CVE-2024-56035 in Upload Scanner Plugin
Summary
by MITRE • 01/02/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kurt Payne Upload Scanner allows Reflected XSS.This issue affects Upload Scanner: from n/a through 1.2.
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Analysis
by VulDB Data Team • 02/16/2025
The vulnerability identified as CVE-2024-56035 represents a critical cross-site scripting flaw within the Kurt Payne Upload Scanner application, specifically categorized under CWE-79 which defines improper neutralization of input during web page generation. This vulnerability manifests as a reflected cross-site scripting attack that occurs when the application fails to properly sanitize user-supplied input before incorporating it into dynamically generated web content. The affected version range spans from an unspecified initial version through 1.2, indicating that all iterations within this scope are potentially compromised by this security weakness.
The technical implementation of this vulnerability stems from the application's failure to adequately validate and escape user input parameters that are subsequently reflected back to users within the web interface. When a malicious actor crafts a specially crafted payload and delivers it to an unsuspecting user through social engineering or direct exploitation, the scanner processes this input without proper sanitization mechanisms. The reflected nature of this vulnerability means that the malicious script is executed in the victim's browser when they view the affected page, with the payload being reflected from the web server's response back to the user agent. This particular weakness allows attackers to inject malicious scripts that can execute within the context of the victim's browser session, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the user.
The operational impact of this vulnerability extends beyond simple script execution, as it provides attackers with the capability to perform session manipulation and data exfiltration attacks. When exploited, the reflected XSS vulnerability enables unauthorized users to establish persistent access to vulnerable systems through session cookies or authentication tokens that may be accessible to the malicious script. The attack surface is particularly concerning given that the vulnerability exists in the upload scanner functionality, suggesting that attackers could potentially exploit this weakness during file upload operations or when processing user-provided information within the scanner's web interface. This type of vulnerability aligns with ATT&CK technique T1059.007 for command and scripting interpreter and T1566.001 for spearphishing attachment, as it enables attackers to establish initial access through malicious payloads that are reflected back to users.
Mitigation strategies for CVE-2024-56035 should focus on implementing robust input validation and output encoding mechanisms throughout the application's web interface. Organizations must ensure that all user-supplied input is properly sanitized and escaped before being rendered in web pages, utilizing context-appropriate encoding methods such as HTML entity encoding for content displayed within web pages. The implementation of Content Security Policy (CSP) headers should be enforced to restrict the execution of inline scripts and limit the sources from which scripts can be loaded. Additionally, the application should employ proper input validation routines that reject or sanitize potentially malicious content before processing, and all versions of the Upload Scanner should be updated to the latest patched release. Security monitoring should be enhanced to detect anomalous user behavior patterns that may indicate exploitation attempts, and regular security assessments should be conducted to identify similar vulnerabilities within the application's codebase. The remediation process must also include comprehensive testing to ensure that all input fields and parameters are properly protected against XSS attacks, with particular attention to the upload functionality where user input is processed and potentially reflected back to users.