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Privilege Escalation Affecting passenger package, versions <5.1.0

0.0
high

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.04% (6th percentile)
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NVD
7.8 high
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Red Hat
5.5 medium

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  • Snyk ID SNYK-RUBY-PASSENGER-20371
  • published 7 Jun 2017
  • disclosed 1 Nov 2016
  • credit Jeremy Evans
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Introduced: 1 Nov 2016

CVE-2016-10345 Open this link in a new tab
CWE-264 Open this link in a new tab

How to fix?

Upgrade passenger to version 5.1.0 or higher.

Overview

passenger is a modern web server and application server for Ruby, Python and Node.js, optimized for performance, low memory usage and ease of use.

Affected versions of the package are vulnerable to Privilege Escalation, due to insecure tmp file names. If an attacker has access to the system, they could conduct a symlink attack in the /tmp files and overwrite these files when the passenger-install-nginx-module was run, resulting in the attacker gaining the privileges of the user running the task.