CVE-2018-12029
Fixed in a distro release EPSS <1%
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.
Products: phusion passenger, debian_linux
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| RubyGems | passenger | 5.3.2 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | passenger | 5.0.30-1.1 |
| Debian 13 | passenger | 5.0.30-1.1 |
| Debian 14 | passenger | 5.0.30-1.1 |
| Debian 8 | ruby-passenger | 4.0.53-1+deb8u1 |
| SUSE Linux Enterprise Module for Containers 12 | rubygem-passenger | 5.0.18-12.9.1 |
| Ubuntu 18.04 LTS | passenger | 5.0.30-1+deb9u1build0.18.04.1 |
| Ubuntu Pro 16.04 LTS | passenger | 5.0.27-2ubuntu0.1~esm1 |