EUVD-2017-18928CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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4Description
Serviio PRO 1.8 contains an information disclosure vulnerability due to improper access control enforcement in the Configuration REST API that allows unauthenticated attackers to access sensitive information. Remote attackers can send specially crafted requests to the REST API endpoints to retrieve potentially sensitive configuration data without authentication.
Analysis
An information disclosure vulnerability in Serviio PRO 1.8 and earlier versions allows unauthenticated remote attackers to retrieve sensitive configuration data through the Configuration REST API due to missing authentication controls. Multiple public exploits are available, with proof-of-concept code published on Exploit-DB and PacketStorm, making this vulnerability easily exploitable by attackers with no special privileges or user interaction required.
Technical Context
Serviio PRO is a media streaming server software that implements a REST API for configuration management. The vulnerability stems from CWE-306 (Missing Authentication for Critical Function), where the REST API endpoints fail to enforce authentication checks before serving configuration data. The affected versions include Serviio PRO 1.6.1, 1.7.0, 1.7.1, and 1.8.0.0 PRO as identified by CPE cpe:2.3:a:serviio:serviio_pro:*:*:*:*:*:*:*:*. The REST API, designed for administrative configuration, inadvertently exposes sensitive server settings to any network-accessible attacker.
Affected Products
Serviio PRO versions 1.6.1, 1.7.0, 1.7.1, and 1.8.0.0 PRO are confirmed vulnerable based on EUVD data. The CPE identifier cpe:2.3:a:serviio:serviio_pro:*:*:*:*:*:*:*:* indicates all versions may be affected, though specific testing confirms the versions listed. The vulnerability affects the Configuration REST API component specifically, which is typically exposed on the same port as the web interface.
Remediation
Upgrade to Serviio PRO version newer than 1.8.0.0 if available. As an immediate workaround, restrict network access to the Serviio PRO REST API using firewall rules or access control lists to limit exposure to trusted networks only. Consider implementing a reverse proxy with authentication in front of the Serviio service. Monitor for unauthorized access attempts to REST API endpoints. The ZeroScience advisory (https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5404.php) may contain additional vendor-specific guidance.
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