CVE-2018-12027
8.8 · HIGHOverview
CVE-2018-12027 is a high-severity vulnerability affecting phusion passenger. It was published on June 17, 2018 and has a CVSS 3.0 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.0 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
An Insecure Permissions vulnerability in SpawningKit in Phusion Passenger 5.3.x before 5.3.2 causes information disclosure in the following situation: given a Passenger-spawned application process that reports that it listens on a certain Unix domain socket, if any of the parent directories of said socket are writable by a normal user that is not the application's user, then that non-application user can swap that directory with something else, resulting in traffic being redirected to a non-application user's process through an alternative Unix domain socket.
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 | >= 5.3.0, < 5.3.2 | Affected |
Frequently Asked Questions
What is CVE-2018-12027?
CVE-2018-12027 is a high-severity vulnerability affecting phusion passenger. It was published on June 17, 2018 and has a CVSS 3.0 base score of 8.8 (HIGH).
How severe is CVE-2018-12027?
This vulnerability has a CVSS 3.0 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2018-12027?
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-2018-12027?
CyberStrike's AI-powered security agents can automatically detect CVE-2018-12027 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
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