Crestron AM-100 1.2.1 Path Traversal / Hard-Coded Credentials

Credit: Zach Lanier
Risk: High
Local: No
Remote: Yes

CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: None
Availability impact: None

================================================================= # Crestron AM-100 (Multiple Vulnerabilities) ================================================================= # Date: 2016-08-01 # Exploit Author: Zach Lanier # Vendor Homepage: # Version: v1.1.1.11 - v1.2.1 # CVE: CVE-2016-5639 # References: # # Description: The Crestron AirMedia AM-100 with firmware versions v1.1.1.11 - v1.2.1 is vulnerable to multiple issues. 1) Path Traversal GET request: http://[AM-100-ADDRESS]/cgi-bin/login.cgi?lang=en&src=../../../../../../../../../../../../../../../../../../../../etc/shadow 2) Hidden Management Console http://[AM-100-ADDRESS]/cgi-bin/login_rdtool.cgi The AM-100 has a hardcoded default credential of rdtool::mistral5885 This interface contains the ability to upload arbitrary files (RD upload) and can enable a telnet server that runs on port 5885 (RD Debug mode). 3) Hardcoded credentials The default root password for these devices is root::awind5885 Valid login sessions for the default (non-debugging) management interface are stored on the filesystem as session01, session02.. etc. Cleartext credentials can be read directly from these files.

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