PT-2018-10950 · Phusion · Phusion Passenger

Published 2018-06-17 · Updated 2022-05-13 · CVE-2018-12027

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Phusion Passenger versions 5.3.x through 5.3.1

Description The issue is related to insecure permissions in SpawningKit, which can lead to information disclosure. This occurs when a Passenger-spawned application process reports listening on a certain Unix domain socket, and any parent directory of the socket is writable by a non-application user. This allows the non-application user to swap the directory, redirecting traffic to their process through an alternative Unix domain socket.

Recommendations For Phusion Passenger versions 5.3.x through 5.3.1, update to version 5.3.2 to resolve the issue.

Exploit

Fix

Information Disclosure

Incorrect Permission

Weakness Enumeration

CWE-200

CWE-732

Related Identifiers

CVE-2018-12027

GHSA-WHFX-877C-5P28

Affected Products

Phusion Passenger

References · 12

• 🔥 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/passenger/CVE-2018-12027.yml · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2018-12027 · Security Note
• https://osv.dev/vulnerability/CVE-2018-12027 · Vendor Advisory
• https://security.gentoo.org/glsa/201807-02 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-12027 · Vendor Advisory
• https://blog.phusion.nl/passenger-5-3-2 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-whfx-877c-5p28 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-12027 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-12027 · Vendor Advisory
• https://github.com/phusion/passenger · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12027 · Note
• https://blog.phusion.nl/2018/06/12/passenger-5-3-2-various-security-fixes · Note