CVE-2018-12026: passenger: SpawningKit allows malicious applications to replace files and directories allowing for arbitrary reads and writes

Severity: Critical

CVSS Score: 9.8

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.