Loading...
Skip to main content
GeekWala

CVE-2018-12029 — Vulnerability in passenger — CVE Details

HIGH

Phusion Passenger Race Condition Allows Privilege Escalation

Published May 14, 2022Updated February 20, 2024Source: osv

Summary

A race condition in the nginx module in Phusion Passenger 3.x through 5.x before 5.3.2 allows local escalation of privileges when a non-standard passenger_instance_registry_dir with insufficiently strict permissions is configured. Replacing a file with a symlink after the file was created, but before it was chowned, leads to the target of the link being chowned via the path. Targeting sensitive files such as root's crontab file allows privilege escalation.

Advisory Timeline

  • First published May 14, 2022 (1612 days ago).
  • Last revised February 20, 2024 — 647 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Bundler
Update passenger to 5.3.2 or later
gem install passenger -v 5.3.2

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: rubygems (1).

PackageEcosystemAffectedFixed In
passenger
rubygems
3.0.0, 3.0.1, 3.0.10, 3.0.11 (+126 more)5.3.2

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.0 score means for each attack dimension.

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2018-12029?
Phusion Passenger Race Condition Allows Privilege Escalation This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.0/10).
How do I check if my project is affected by CVE-2018-12029?
CVE-2018-12029 affects passenger. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2018-12029 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
7.0

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-jjcj-fgfm-9g9r

Related CVEs

Check if you're affected

Scan your dependencies to see if this vulnerability affects your projects.

Scan Your Dependencies