CVE-2018-13293 in DiskStation Manager
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Control Panel SSO Settings in Synology DiskStation Manager (DSM) before 6.2.1-23824 allows remote authenticated users to inject arbitrary web script or HTML via the URL parameter.
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Analysis
by VulDB Data Team • 01/15/2025
The vulnerability identified as CVE-2018-13293 represents a critical cross-site scripting flaw within Synology DiskStation Manager's Control Panel SSO Settings component. This weakness affects DSM versions prior to 6.2.1-23824 and enables remote authenticated attackers to execute malicious web scripts or HTML code through manipulation of the URL parameter. The issue stems from inadequate input validation and output encoding mechanisms within the Single Sign-On configuration interface, creating an avenue for persistent security breaches.
The technical exploitation of this vulnerability occurs when authenticated users interact with the SSO settings page, where the application fails to properly sanitize user-supplied URL parameters before rendering them in web responses. This insufficient sanitization creates a condition where malicious input can be executed in the context of the victim's browser session, potentially allowing attackers to hijack user sessions, steal sensitive authentication tokens, or redirect users to malicious websites. The vulnerability specifically targets the Control Panel's SSO configuration functionality, which handles authentication and authorization processes for various network services.
From an operational standpoint, this XSS vulnerability poses significant risks to organizations relying on Synology DSM for their storage infrastructure. Attackers can leverage this weakness to compromise user sessions and potentially gain unauthorized access to sensitive data stored on the network-attached storage systems. The authenticated nature of the vulnerability means that attackers must first obtain valid credentials, but once achieved, they can exploit this flaw to escalate their privileges or establish persistent access. This vulnerability directly impacts the integrity and confidentiality of the storage environment, potentially leading to data exfiltration or system compromise.
The security implications extend beyond immediate exploitation as this vulnerability can serve as a stepping stone for more sophisticated attacks within the network infrastructure. Security professionals should note that this flaw aligns with CWE-79, which describes cross-site scripting vulnerabilities, and maps to ATT&CK technique T1059.007 for script execution. Organizations should implement immediate mitigation strategies including updating to DSM version 6.2.1-23824 or later, implementing web application firewalls to filter malicious inputs, and conducting thorough security assessments of all SSO configurations. Additionally, network monitoring should be enhanced to detect unusual traffic patterns that might indicate exploitation attempts, while user access controls should be reviewed to minimize potential impact from compromised accounts.