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Phusion Passenger uses a known /tmp filename

High severity GitHub Reviewed Published Aug 21, 2018 to the GitHub Advisory Database • Updated Jun 9, 2023

Package

bundler passenger (RubyGems)

Affected versions

< 5.1.0

Patched versions

5.1.0

Description

In Phusion Passenger before 5.1.0, a known /tmp filename was used during passenger-install-nginx-module execution, which could allow local attackers to gain the privileges of the passenger user

References

Published to the GitHub Advisory Database Aug 21, 2018
Reviewed Jun 16, 2020
Last updated Jun 9, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.044%
(15th percentile)

Weaknesses

No CWEs

CVE ID

CVE-2016-10345

GHSA ID

GHSA-cqxw-3p7v-p9gr

Source code

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