vulnerability
Ubuntu: USN-5261-1 (CVE-2018-12029): Phusion Passenger vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:L/AC:M/Au:N/C:P/I:P/A:P) | Jun 17, 2018 | Mar 22, 2023 | Aug 18, 2025 |
Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
Jun 17, 2018
Added
Mar 22, 2023
Modified
Aug 18, 2025
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.
Solutions
ubuntu-pro-upgrade-libapache2-mod-passengerubuntu-pro-upgrade-passenger
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