Privilege escalation in Phusion Passenger - CVE-2018-12026

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Main Vulnerability Database Vulnerabilities #VU13989

Privilege escalation in Phusion Passenger - CVE-2018-12026

Published: July 24, 2018


Vulnerability identifier: #VU13989
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-12026
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local attacker to gain elevated privileges.

The vulnerability exists due to the SpawningKit subsystem of the affected software allows applications to replace key files or directories in the spawning communication directory with symbolic links. A local attacker can create a symbolic link designed to submit malicious input to a targeted system, execute read and write commands on arbitrary file paths on the system and use it to gain elevated privileges or access sensitive information.


Affected software

Phusion Passenger
Gentoo Linux

How to mitigate CVE-2018-12026

Update to version 5.3.2.

Phusion Passenger - update to 5.3.2

External References

Related Security Bulletins