CVE-2018-12029 | BDVDB-2026-102727 Detail

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.

Impact#

Weaknesses#

References#

Exploit#

History#

1. Version 12018-06-17Record published in the CVE List.
2. Version 22024-08-05Most recent update recorded in the CVE List.