CVE-2017-16355
4.7 · MEDIUMOverview
CVE-2017-16355 is a medium-severity vulnerability affecting phusion passenger. It was published on December 14, 2017 and has a CVSS 3.1 base score of 4.7 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
In agent/Core/SpawningKit/Spawner.h in Phusion Passenger 5.1.10 (fixed in Passenger Open Source 5.1.11 and Passenger Enterprise 5.1.10), if Passenger is running as root, it is possible to list the contents of arbitrary files on a system by symlinking a file named REVISION from the application root folder to a file of choice and querying passenger-status --show=xml.
Remediation
Check the references section for vendor advisories and patches from phusion. Update passenger to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| phusion | passenger | >= 5.0.10, < 5.1.10 | Affected |
References
Frequently Asked Questions
What is CVE-2017-16355?
CVE-2017-16355 is a medium-severity vulnerability affecting phusion passenger. It was published on December 14, 2017 and has a CVSS 3.1 base score of 4.7 (MEDIUM).
How severe is CVE-2017-16355?
This vulnerability has a CVSS 3.1 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2017-16355?
Check the references section for vendor advisories and patches from phusion. Update passenger to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2017-16355?
CyberStrike's AI-powered security agents can automatically detect CVE-2017-16355 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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