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CVE-2018-12029 Detail

Description

A race condition in the nginx module in Phusion Passenger 3.x through 5.x before 5.3.2 allows local escalation of privileges when a non-standard passenger_instance_registry_dir with insufficiently strict permissions is configured. Replacing a file with a symlink after the file was created, but before it was chowned, leads to the target of the link being chowned via the path. Targeting sensitive files such as root's crontab file allows privilege escalation.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
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References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://blog.phusion.nl/passenger-5-3-2 Mitigation  Vendor Advisory 
https://lists.debian.org/debian-lts-announce/2018/06/msg00007.html Mailing List  Third Party Advisory 
https://pulsesecurity.co.nz/advisories/phusion-passenger-priv-esc Third Party Advisory 
https://security.gentoo.org/glsa/201807-02 Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-12029
NVD Published Date:
06/17/2018
NVD Last Modified:
03/08/2019
Source:
MITRE