CVE-2020-28857 in Digital Asset Management
Summary
by MITRE • 12/15/2020
OpenAsset Digital Asset Management (DAM) through 12.0.19, does not correctly sanitize user supplied input in multiple parameters and endpoints, allowing for stored cross-site scripting attacks.
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Analysis
by VulDB Data Team • 12/17/2020
OpenAsset Digital Asset Management version 12.0.19 and earlier contains a critical stored cross-site scripting vulnerability that stems from inadequate input sanitization across multiple parameters and endpoints within the application. This vulnerability allows authenticated attackers with limited privileges to inject malicious scripts into the application's data storage, which then executes in the context of other users' browsers when they access the affected content. The flaw exists in the application's handling of user-supplied data that is subsequently rendered in web pages without proper sanitization or encoding mechanisms.
The technical implementation of this vulnerability demonstrates a classic stored XSS pattern where user input flows through multiple entry points including form fields, API endpoints, and administrative configuration parameters. Attackers can leverage this weakness by submitting malicious payloads through these vulnerable parameters, which are then stored in the application's database or configuration files. When other users view the affected content or interact with the stored data, their browsers execute the injected scripts within their session context, potentially leading to session hijacking, credential theft, or redirection to malicious sites. This vulnerability operates at the application layer and can be exploited through various attack vectors including direct user input, API calls, or administrative configuration modifications.
The operational impact of CVE-2020-28857 extends beyond simple script execution as it compromises the integrity of the entire digital asset management ecosystem. Organizations using OpenAsset DAM may experience unauthorized access to sensitive digital assets, data exfiltration, and potential lateral movement within their network infrastructure. The vulnerability affects the core functionality of the application by undermining user trust and potentially exposing confidential intellectual property stored within the DAM system. Attackers could leverage this weakness to establish persistent access or escalate privileges within the application environment, making it particularly dangerous for organizations that rely heavily on digital asset management for brand content and proprietary materials.
Security mitigations for this vulnerability should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application stack. Organizations must ensure that all user-supplied data undergoes strict sanitization before being stored or rendered in web contexts, following established security practices such as those outlined in the OWASP Top Ten and CWE-79. The implementation of Content Security Policy headers, proper parameter validation, and input encoding should be prioritized alongside immediate patching of the affected OpenAsset versions. Additionally, security monitoring should be enhanced to detect anomalous user behavior patterns that might indicate exploitation attempts, while regular security assessments should be conducted to identify similar vulnerabilities in other application components. This vulnerability aligns with ATT&CK technique T1566.001 for initial access through malicious file delivery and T1059.001 for command and script injection, making it a critical target for both preventive and detective security controls.