CVE-2017-16355

MEDIUM EPSS 27.8%
Published Dec 14, 20178y ago · Modified Jun 17, 20262w ago
4.7 CVSS 3.1
Medium
Find Similar
Published Dec 14, 2017 8y ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
4.7
Exploitability
1.0
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
27.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

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

Affected Products 3

VendorProductVersionRange
phusionpassenger*≥5.0.10  –  <5.1.10
phusionpassenger*≥5.0.10  –  <5.1.11
debiandebian_linux9.0any

References 4

  • blog.phusion.nl https://blog.phusion.nl/2017/10/13/passenger-security-advisory-5-1-11/
    Third Party Advisory
  • github.com https://github.com/phusion/passenger/commit/4043718264095cde6623c2cbe8c644541036d7bf
    PatchThird Party Advisory
  • seclists.org https://seclists.org/bugtraq/2019/Mar/34
    Issue TrackingMailing ListThird Party Advisory
  • debian.org https://www.debian.org/security/2019/dsa-4415
    Third Party Advisory

Remediation

  • github.com https://github.com/phusion/passenger/commit/4043718264095cde6623c2cbe8c644541036d7bf
    PatchThird Party Advisory