Serviio Pro 1.6.1/1.7.0/1.7.1/1.8.0.0 Windows Service unquoted search path

Summaryinfo

A vulnerability classified as problematic has been found in Serviio Pro 1.6.1/1.7.0/1.7.1/1.8.0.0. Affected by this vulnerability is an unknown functionality of the component Windows Service. This manipulation causes unquoted search path. This vulnerability is registered as CVE-2017-20218. The attack needs to be launched locally. No exploit is available.

Detailsinfo

A vulnerability has been found in Serviio Pro 1.6.1/1.7.0/1.7.1/1.8.0.0 and classified as critical. Affected by this vulnerability is some unknown processing of the component Windows Service. The manipulation with an unknown input leads to a unquoted search path vulnerability. The CWE definition for the vulnerability is CWE-428. The product uses a search path that contains an unquoted element, in which the element contains whitespace or other separators. This can cause the product to access resources in a parent path. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Serviio PRO 1.8 contains an unquoted search path vulnerability in the Windows service that allows local users to execute arbitrary code with elevated privileges by placing malicious executables in the system root path. Additionally, improper directory permissions with full access for the Users group allow authenticated users to replace the executable file with arbitrary binaries, enabling privilege escalation during service startup or system reboot.

The weakness was published by Gjoko Krstic as ZSL-2017-5405. It is possible to read the advisory at zeroscience.mk. This vulnerability is known as CVE-2017-20218 since 03/15/2026. The exploitation appears to be difficult. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/15/2026). The attack technique deployed by this issue is T1574.009 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Name

• Serviio Pro

Version

• 1.6.1
• 1.7.0
• 1.7.1
• 1.8.0.0

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