What’s Vulnerable › Vulnerabilities

CVE-2018-12028

• Severity: high (CVSS 7.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-06-17 · updated 2026-06-17
• Weakness: CWE-732

Description

An Incorrect Access Control vulnerability in SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows a Passenger-managed malicious application, upon spawning a child process, to report an arbitrary different PID back to Passenger's process manager. If the malicious application then generates an error, it would cause Passenger's process manager to kill said reported arbitrary PID.

Affected products

• Phusion Passenger: from 5.3.0 before 5.3.2 — fixed in 5.3.2

How to fix

Upgrade to a fixed version: Phusion Passenger 5.3.2. Check the vendor advisory for mitigations.

References

• https://blog.phusion.nl/passenger-5-3-2
• https://security.gentoo.org/glsa/201807-02
• https://blog.phusion.nl/passenger-5-3-2
• https://security.gentoo.org/glsa/201807-02

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