CVE Vulnerability

CVE-2018-12029

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.

4.4 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.4 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

7 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://pulsesecurity.co.nz/advisories/phusion-passenger-priv-esc Third Party Advisory
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://security.gentoo.org/glsa/201807-02 Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:phusion:passenger:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Information

Published : 2018-06-17 08:29

Updated : 2019-03-08 02:12

NVD link : CVE-2018-12029

Mitre link : CVE-2018-12029

Products Affected
No products.
CWE
CWE-362