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Fencer Intel
medium 4.4

CVE-2013-4136 json

insecure temporary directory usage in passenger

published 2013-09-30 13 y ago modified 2026-06-16 4 mo ago also GHSA-w6rc-q387-vpgq , EUVD-2017-0321

cvss
4.4
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 25%
public exploits
0
none known

Summary

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/.

Patch / fix

  • rubygems passenger 4.0.6
  • passenger Debian 14, Debian 13, Debian 12 3.0.13debian-1.2

debian advisories DEBIAN-CVE-2013-4136

  • rubygem-passenger openshift 1.2 3.0.21-3.el6op
  • mod_passenger openshift 1.2 3.0.21-3.el6op
  • rubygem-spruz openshift 1.2 0.2.5-4.el6op
  • rubygem-file-tail openshift 1.2 1.0.5-4.el6op
  • ruby193-mod_passenger openshift 1.2 3.0.21-3.el6op
  • rubygem-passenger-native openshift 1.2 3.0.21-3.el6op
  • ruby193-rubygem-passenger openshift 1.2 3.0.21-3.el6op
  • rubygem-passenger-native-libs openshift 1.2 3.0.21-3.el6op

red hat advisories RHSA-2013:1136

  • rubygem-passenger WebYast 1.3, Studio Onsite 1.3, Lifecycle Management Server 1.3 3.0.14-0.14.1

suse advisories SUSE-SU-2016:0042-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2013-4136 updated cvss 4.6

rubygem-passenger: insecure temporary directory usage due to reuse of existing server instance directories

  • Red Hat OpenShift Enterprise Node rubygem-spruz 0.2.5-4.el6op, mod_passenger 3.0.21-3.el6op, rubygem-file-tail 1.0.5-4.el6op, rubygem-passenger 3.0.21-3.el6op, ruby193-mod_passenger 3.0.21-3.el6op, rubygem-passenger-native 3.0.21-3.el6op, +4 more Red Hat RHOSE Infrastructure 1.2 rubygem-spruz 0.2.5-4.el6op, mod_passenger 3.0.21-3.el6op, rubygem-file-tail 1.0.5-4.el6op, rubygem-passenger 3.0.21-3.el6op, ruby193-mod_passenger 3.0.21-3.el6op, rubygem-passenger-native 3.0.21-3.el6op, +4 more
    fixed: vendor fix RHSA-2013:1136

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.33% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.4 AV:L/AC:M/Au:N/C:P/I:P/A:P

Affected packages

ecosystem package affected fixed in
rubygems passenger
<4.0.6
4.0.6

Classification

Weakness
  • CWE-59 Improper Link Resolution Before File Access

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.