CVE-2017-14756 in Document Sciences xPression
Summary
by MITRE
OpenText Document Sciences xPression (formerly EMC Document Sciences xPression) v4.5SP1 Patch 13 (older versions might be affected as well) is prone to Cross-Site Scripting: /xAdmin/html/Deployment (cat_id).
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Analysis
by VulDB Data Team • 11/21/2019
The vulnerability identified as CVE-2017-14756 affects OpenText Document Sciences xPression version 4.5SP1 Patch 13 and potentially older versions, representing a critical cross-site scripting weakness within the application's administrative interface. This security flaw exists in the /xAdmin/html/Deployment component where the cat_id parameter is processed without proper input validation or output encoding, creating an avenue for malicious actors to inject arbitrary JavaScript code into the application's response. The vulnerability specifically targets the deployment management functionality that allows administrators to manage content categories, making it particularly dangerous as it could be exploited by attackers with access to the administrative interface or through social engineering attacks that trick administrators into executing malicious payloads.
The technical implementation of this XSS vulnerability stems from insufficient sanitization of user-supplied input within the cat_id parameter handling mechanism. When the application processes requests containing malicious script code within this parameter, it fails to properly encode or escape the output before rendering it in the web page context. This allows attackers to inject JavaScript payloads that execute in the context of other users' browsers who visit the affected page. The vulnerability is classified as a persistent XSS when the malicious input is stored and later rendered to multiple users, or as reflected XSS when the input is immediately reflected back to the user's browser. The impact is exacerbated by the administrative nature of the affected component, as successful exploitation could enable attackers to hijack user sessions, steal sensitive administrative credentials, or modify deployment configurations.
The operational impact of this vulnerability extends beyond simple script injection, as it can lead to complete compromise of the administrative interface and potentially the entire Document Sciences xPression environment. An attacker who successfully exploits this vulnerability could gain unauthorized access to sensitive document management systems, manipulate deployment workflows, access confidential content, or establish persistent backdoors within the organization's document processing infrastructure. The vulnerability's location within the deployment management functionality means that exploitation could result in unauthorized modification of content delivery systems, potentially affecting thousands of documents across the enterprise. This risk is particularly severe in enterprise environments where Document Sciences xPression is used for critical business processes and document distribution.
Mitigation strategies for CVE-2017-14756 should prioritize immediate patching of the affected OpenText Document Sciences xPression versions, with administrators applying the vendor-provided security updates as soon as they become available. Organizations should implement input validation controls at the application level to sanitize all user-supplied parameters, particularly those used in administrative interfaces. Web application firewalls can provide additional protection layers by filtering suspicious script patterns in HTTP requests. Security teams should also conduct regular security assessments of administrative interfaces to identify similar vulnerabilities, implementing proper output encoding and context-aware escaping mechanisms. The vulnerability aligns with CWE-79 Cross-Site Scripting, which is categorized under the OWASP Top Ten as a critical web application security risk, and maps to ATT&CK technique T1059.007 for script execution through web interfaces. Organizations should also consider implementing principle of least privilege access controls for administrative interfaces to limit potential damage from successful exploitation attempts.