VDB
CVE-2018-12029
CVE-2018-12029
PUBLISHED
CVSS 7 HIGH
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.
EPSS 0.27% · 19.7th percentile
Risk Scores
CVSS 3.0
7
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.27%
19.7th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:Pro:16.04:LTS | passenger | 5.0.22-1build2, 5.0.22-1build1, 5.0.27-2 |
| Ubuntu:18.04:LTS | passenger | 5.0.30-1build1, 5.0.30-1build2, 0 |
Timeline
- Jun 17, 2018 CVE Published
- Mar 8, 2019 CVE Updated
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 26, 2021 EPSS Score
- Oct 28, 2021 EPSS Score
- Dec 31, 2021 EPSS Score
- Mar 4, 2022 EPSS Score
- May 7, 2022 EPSS Score
- Jul 9, 2022 EPSS Score
- Sep 12, 2022 EPSS Score
- Nov 14, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2018-12029 third-party-advisory
- https://blog.phusion.nl/2018/06/12/passenger-5-3-2-various-security-fixes/ third-party-advisory
- https://blog.phusion.nl/passenger-5-3-2 third-party-advisory
- https://pulsesecurity.co.nz/advisories/phusion-passenger-priv-esc third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2018-12029 third-party-advisory
- https://ubuntu.com/security/notices/USN-5261-1 vendor-advisory