CVE-2018-12026
9.8 · CRITICALOverview
CVE-2018-12026 is a critical-severity vulnerability affecting phusion passenger. It was published on June 17, 2018 and has a CVSS 3.0 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.0 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
During the spawning of a malicious Passenger-managed application, SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows such applications to replace key files or directories in the spawning communication directory with symlinks. This then could result in arbitrary reads and writes, which in turn can result in information disclosure and privilege escalation.
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-2018-12026?
CVE-2018-12026 is a critical-severity vulnerability affecting phusion passenger. It was published on June 17, 2018 and has a CVSS 3.0 base score of 9.8 (CRITICAL).
How severe is CVE-2018-12026?
This vulnerability has a CVSS 3.0 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2018-12026?
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-2018-12026?
CyberStrike's AI-powered security agents can automatically detect CVE-2018-12026 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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