#VU14303 Security restrictions bypass in Crestron Electronics products - CVE-2018-13341

Vulnerability identifier: #VU14303

Vulnerability risk: Low

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2018-13341

CWE-ID: CWE-522

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
TSW-560-NC
Hardware solutions / Firmware
TSW-760-NC
Hardware solutions / Firmware
TSW-1060-NC
Hardware solutions / Firmware
TSW-560
Hardware solutions / Firmware
TSW-760
Hardware solutions / Firmware
TSW-1060
Hardware solutions / Firmware
MC3
Hardware solutions / Firmware

Vendor: Crestron Electronics

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The vulnerability exists due to the passwords for special sudo accounts may be calculated using information accessible to those with regular user privileges. A remote unauthenticated attacker can decipher these passwords, execute hidden API calls and escape the CTP console sandbox environment with elevated privileges.

Mitigation
Update TSW-X60 to version 2.001.0037.001.
Update MC3 to version 1.502.0047.001.

Vulnerable software versions

TSW-560-NC: before 2.001.0037.001

TSW-760-NC: before 2.001.0037.001

TSW-1060-NC: before 2.001.0037.001

TSW-560: before 2.001.0037.001

TSW-760: before 2.001.0037.001

TSW-1060: before 2.001.0037.001

MC3: before 1.502.0047.001

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External links
https://ics-cert.us-cert.gov/advisories/ICSA-18-221-01

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.