Vulnerability Report

CVE-2018-12029

Title: Phusion Passenger Auth Bypass

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2018-12029.

CWE Category CWE-362
Published Date Jun 17, 2018
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 7.0 CVSS v3.0
Exploit Probability (EPSS)
0.10%

Vulnerability Summary

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.

Impacted Vendors

P
phusion 1

Reference Links

https://blog.phusion.nl/passenger-5-3-2 https://lists.debian.org/debian-lts-announce/2018/06/msg00007.html https://pulsesecurity.co.nz/advisories/phusion-passenger-priv-esc https://security.gentoo.org/glsa/201807-02 https://blog.phusion.nl/passenger-5-3-2 https://lists.debian.org/debian-lts-announce/2018/06/msg00007.html https://pulsesecurity.co.nz/advisories/phusion-passenger-priv-esc https://security.gentoo.org/glsa/201807-02
CVSS v3.0
Source Entity [email protected]
Severity HIGH
7.0
Attack Vector
LOCAL
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
4.4
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:L/AC:M/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2018-12029 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.