CVE-2017-16355

low-risk
Published 2017-12-14

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.

Do I need to act?

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0.14% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.7/10 Medium
LOCAL / HIGH complexity

Affected Products (3)

Passenger
Passenger

Affected Vendors

Phusion Debian

References (8)

Third Party Advisory https://blog.phusion.nl/2017/10/13/passenger-security-advisory-5-1-11/
Patch https://github.com/phusion/passenger/commit/4043718264095cde6623c2cbe8c644541036...
Issue Tracking https://seclists.org/bugtraq/2019/Mar/34
Third Party Advisory https://www.debian.org/security/2019/dsa-4415
Third Party Advisory https://blog.phusion.nl/2017/10/13/passenger-security-advisory-5-1-11/
Patch https://github.com/phusion/passenger/commit/4043718264095cde6623c2cbe8c644541036...
Issue Tracking https://seclists.org/bugtraq/2019/Mar/34
Third Party Advisory https://www.debian.org/security/2019/dsa-4415
22
/ 100
low-risk
Severity 12/34 · Low
Exploitability 1/34 · Minimal
Exposure 9/34 · Low