DescriptionIn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitylow (attack range: local)
Debian Bugs884463

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
passenger (PTS)stretch (security), stretch5.0.30-1+deb9u1fixed
buster, sid5.0.30-1.1fixed
ruby-passenger (PTS)jessie4.0.53-1vulnerable
jessie (security)4.0.53-1+deb8u1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ruby-passengersourcewheezy(not affected)


[jessie] - ruby-passenger <no-dsa> (Minor issue)
[wheezy] - ruby-passenger <not-affected> (Vulnerable code introduced later) and following.
Problem mitigated in versions prior to 5.0.10 where root privileges were required to
get the status information.

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