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CVE-2013-4136

4.4 · MEDIUM

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…

Published Sep 30, 2013phusionCWE-59EPSS 0.33%

Overview

CVE-2013-4136 is a medium-severity vulnerability affecting phusion passenger. It was published on September 30, 2013 and has a CVSS 2.0 base score of 4.4 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.4, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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/.

Remediation

Check the references section for vendor advisories and patches from phusion. Update passenger to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
phusionpassenger0Affected

References

Refrhn.redhat.com/errata/RHSA-2013-1136.htmlRefwww.openwall.com/lists/oss-security/2013/07/16/6Refcode.google.com/p/phusion-passenger/issues/detail?id=910GitHubgithub.com/phusion/passenger/blob/release-4.0.6/NEWSGitHubgithub.com/phusion/passenger/commit/5483b3292cc2af1c83033eaaadec20dba4dcfd9bRefrhn.redhat.com/errata/RHSA-2013-1136.htmlRefwww.openwall.com/lists/oss-security/2013/07/16/6Refcode.google.com/p/phusion-passenger/issues/detail?id=910GitHubgithub.com/phusion/passenger/blob/release-4.0.6/NEWSGitHubgithub.com/phusion/passenger/commit/5483b3292cc2af1c83033eaaadec20dba4dcfd9b

How CyberStrike helps

Frequently asked questions

What is CVE-2013-4136?

CVE-2013-4136 is a medium-severity vulnerability affecting phusion passenger. It was published on September 30, 2013 and has a CVSS 2.0 base score of 4.4 (MEDIUM).

How severe is CVE-2013-4136?

This vulnerability has a CVSS 2.0 base score of 4.4, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2013-4136?

Check the references section for vendor advisories and patches from phusion. Update passenger to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2013-4136?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2013-4136 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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