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CVE-2014-1831

13
FAUCET Score

CVE-2014-1831 describes a local symlink attack vulnerability in Phusion Passenger versions prior to 4.0.37. An attacker could exploit this to write to arbitrary files or directories by manipulating control_process.pid or generation-* files. The vulnerability has a low severity CVSS score of 2.1 (AV:L/AC:L/Au:N/C:N/I:P/A:N), indicating local access and low attack complexity are required, with only partial integrity impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.0.36CPE matchmatch criteria
cpe:2.3:a:phusion:passenger:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.1LOW

AV:L/AC:L/Au:N/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.37%
Probability of exploitation in next 30 days
EPSS Percentile
29.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 40th percentile among its peer group of 2,096 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.6 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

rubygemspatch availablevia ghsa
Product: passengerFixed in: 4.0.38
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 4Fixed in: ruby193-rubygem-passenger
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 4Fixed in: rubygem-passenger

Vendor Advisories (2)

rubygemsGHSA-c7j7-p5jq-26fflow

Insecure use of temporary files in passenger

Oct 10, 2018
redhatCVE-2014-1831Low

rubygem-passenger: insecure use of temporary files

Jan 28, 2014

References

lists.fedoraproject.org / pipermail/package-announce/2015-February/149032.html
openwall.com / lists/oss-security/2014/01/28/8
openwall.com / lists/oss-security/2014/01/30/3
bugs.debian.org / cgi-bin/bugreport.cgi
bugzilla.redhat.com / show_bug.cgi
github.com / phusion/passenger/commit/34b1087870c2