CVE-2017-16355

Debian Security Advisory 4415-1

Severity Score

4.7

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In agent/Core/SpawningKit/Spawner.h in Phusion Passenger 5.1.10 (fixed in Passenger Open Source 5.1.11 and Passenger Enterprise 5.1.10), if Passenger is running as root, it is possible to list the contents of arbitrary files on a system by symlinking a file named REVISION from the application root folder to a file of choice and querying passenger-status --show=xml.

En agent/Core/SpawningKit/Spawner.h en Phusion Passenger 5.1.10 (corregido en Passenger Open Source 5.1.11 y Passenger Enterprise 5.1.10), si Passenger se está ejecutando como root, es posible listar el contenido de archivos arbitrarios en un sistema vinculando simbólicamente un archivo llamado REVISION de la carpeta root de la aplicación a un archivo de libre elección y consultando passenger-status --show=xml.

An arbitrary file read vulnerability was discovered in passenger, a web application server. A local user allowed to deploy an application to passenger, can take advantage of this flaw by creating a symlink from the REVISION file to an arbitrary file on the system and have its content displayed through passenger-status.

*Credits: N/A

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

High

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-11-01 CVE Reserved
2017-12-14 CVE Published
2024-08-05 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CAPEC

References (4)

URL	Tag	Source
https://blog.phusion.nl/2017/10/13/passenger-security-advisory-5-1-11	Third Party Advisory
https://seclists.org/bugtraq/2019/Mar/34	Issue Tracking

URL	Date	SRC

URL	Date	SRC
https://github.com/phusion/passenger/commit/4043718264095cde6623c2cbe8c644541036d7bf	2019-10-28

URL	Date	SRC
https://www.debian.org/security/2019/dsa-4415	2019-10-28

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Phusion Search vendor "Phusion"		Passenger Search vendor "Phusion" for product "Passenger"				>= 5.0.10 < 5.1.10 Search vendor "Phusion" for product "Passenger" and version " >= 5.0.10 < 5.1.10"		enterprise		Affected
Phusion Search vendor "Phusion"		Passenger Search vendor "Phusion" for product "Passenger"				>= 5.0.10 < 5.1.11 Search vendor "Phusion" for product "Passenger" and version " >= 5.0.10 < 5.1.11"		open_source		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected