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CVE-2017-16355

Published: 14 December 2017

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.

Priority

Medium

Cvss 3 Severity Score

4.7

Score breakdown

Status

Package Release Status
passenger
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic
Released (5.0.30-1+deb9u1build0.18.04.1)
cosmic
Released (5.0.30-1+deb9u1build0.18.10.1)
disco
Released (5.0.30-1+deb9u1build0.19.04.1)
eoan Not vulnerable
(5.0.30-1.1)
focal Not vulnerable
(5.0.30-1.1)
groovy Not vulnerable
(5.0.30-1.1)
hirsute Not vulnerable
(5.0.30-1.1)
impish Not vulnerable
(5.0.30-1.1)
jammy Not vulnerable
(5.0.30-1.1)
trusty Does not exist

upstream
Released (5.1.10, 5.1.11, 5.0.30-1.1)
xenial
Released (5.0.27-2ubuntu0.1~esm1)
Available with Ubuntu Pro
zesty Ignored
(end of life)
Patches:
upstream: https://github.com/phusion/passenger/commit/4043718264095cde6623c2cbe8c644541036d7bf
upstream: https://github.com/phusion/passenger/commit/947af424330f5d5f5006860b2f0140bbba153e42
ruby-passenger
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist
(trusty was needed)
upstream Needed

xenial Does not exist

zesty Does not exist

Severity score breakdown

Parameter Value
Base score 4.7
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N