CVE-2013-4136

ext/common/ServerInstanceDir.h in Phusion Passenger gem before 4.0.6 for Ruby allows local users to gain privileges or possibly change the ownership of arbitrary directories via a symlink attack on a directory with a predictable name in /tmp/.

Published: 2013-09-30 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-4136 is rated Low Risk (22.7/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.05%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2013-4136

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 2025-09-16 0.05% 0.05% -0.00%
2 2025-03-17 0.04% 0.05% +0.01%
3 2023-03-07 — 0.04% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-4136

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.4 2.0 MEDIUM
AV:L/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.4 6.4 [email protected]

Weakness enumeration for CVE-2013-4136

GitHub Security Advisory for CVE-2013-4136

GHSA-w6rc-q387-vpgq · Severity: medium · Ecosystem: rubygems — insecure temporary directory usage in passenger

OS Trackers for CVE-2013-4136

vendor priority summary link
debian not yet assigned CVE-2013-4136 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-2013-4136
redhat medium — https://access.redhat.com/security/cve/CVE-2013-4136
ubuntu medium CVE-2013-4136 medium priority: Ubuntu including 2 source packages (passenger, ruby-passenger), 26 status rows across 13 suites (lucid, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): DNE 13, not-affected 6, ignored 5, released 2. https://ubuntu.com/security/CVE-2013-4136

Affected software / configurations for CVE-2013-4136

Vendor Product Version Raw CPE
phusion passenger <= 4.0.5 cpe:2.3:a:phusion:passenger:*:*:*:*:*:*:*:*
phusion passenger 4.0.1 cpe:2.3:a:phusion:passenger:4.0.1:*:*:*:*:*:*:*
phusion passenger 4.0.2 cpe:2.3:a:phusion:passenger:4.0.2:*:*:*:*:*:*:*
phusion passenger 4.0.3 cpe:2.3:a:phusion:passenger:4.0.3:*:*:*:*:*:*:*
phusion passenger 4.0.4 cpe:2.3:a:phusion:passenger:4.0.4:*:*:*:*:*:*:*

References for CVE-2013-4136

cvelogic Threat Intelligence