CVE-2014-1831

Phusion Passenger before 4.0.37 allows local users to write to certain files and directories via a symlink attack on (1) control_process.pid or a (2) generation-* file.

Published: 2015-02-19 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2014-1831 is rated Low Risk (17.9/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.11%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2014-1831

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-17 0.04% 0.11% +0.07%
2 2023-03-07 1.03% 0.04% -0.99%
3 2022-02-04 — 1.03% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2014-1831

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.1 2.0 LOW
AV:L/AC:L/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 3.9 2.9 [email protected]

Weakness enumeration for CVE-2014-1831

GitHub Security Advisory for CVE-2014-1831

GHSA-c7j7-p5jq-26ff · Severity: low · Ecosystem: rubygems — Insecure use of temporary files in passenger

OS Trackers for CVE-2014-1831

vendor priority summary link
debian not yet assigned CVE-2014-1831 not yet assigned priority: Debian including 1 source packages (passenger), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2014-1831
redhat low — https://access.redhat.com/security/cve/CVE-2014-1831
ubuntu medium CVE-2014-1831 medium priority: Ubuntu including 1 source packages (ruby-passenger), 6 status rows across 6 suites (lucid, precise, quantal, saucy, trusty, upstream): DNE 3, ignored 2, released 1. https://ubuntu.com/security/CVE-2014-1831

NVD evaluator notes for CVE-2014-1831

Comment: <a href="http://cwe.mitre.org/data/definitions/61.html">CWE-61: UNIX Symbolic Link (Symlink) Following</a>

Affected software / configurations for CVE-2014-1831

Vendor Product Version Raw CPE
phusion passenger <= 4.0.36 cpe:2.3:a:phusion:passenger:*:*:*:*:*:*:*:*

References for CVE-2014-1831

cvelogic Threat Intelligence