| Name | CVE-2017-16355 |
| Description | In agent/Core/SpawningKit/Spawner.h in Phusion Passenger 5.1.10 (fixed in Passenger Open Source 5.1.11 and Passenger Enterprise 5.1.10), if Passenger is running as root, it is possible to list the contents of arbitrary files on a system by symlinking a file named REVISION from the application root folder to a file of choice and querying passenger-status --show=xml. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| References | DSA-4415-1 |
| NVD severity | low (attack range: remote) |
| Debian Bugs | 884463 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| passenger (PTS) | buster, stretch | 5.0.30-1 | vulnerable |
| stretch (security) | 5.0.30-1+deb9u1 | fixed | |
| sid | 5.0.30-1.1 | fixed | |
| ruby-passenger (PTS) | jessie | 4.0.53-1 | vulnerable |
| jessie (security) | 4.0.53-1+deb8u1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| passenger | source | (unstable) | 5.0.30-1.1 | low | 884463 | |
| passenger | source | stretch | 5.0.30-1+deb9u1 | low | DSA-4415-1 | |
| ruby-passenger | source | (unstable) | (unfixed) | low | ||
| ruby-passenger | source | wheezy | (not affected) |
[jessie] - ruby-passenger <no-dsa> (Minor issue)
[wheezy] - ruby-passenger <not-affected> (Vulnerable code introduced later)
https://blog.phusion.nl/2017/10/13/passenger-security-advisory-5-1-11/
https://github.com/phusion/passenger/commit/4043718264095cde6623c2cbe8c644541036d7bf
http://www.openwall.com/lists/oss-security/2017/11/21/2 and following.
Problem mitigated in versions prior to 5.0.10 where root privileges were required to
get the status information.