Command Injection in QNAP QTS - CVE-2018-19949
Published: June 8, 2020 / Updated: May 24, 2022
Vulnerability identifier: #VU28777
CSH Severity: Low
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-19949
CWE-ID: CWE-77
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerability details
The vulnerability allows a remote user to execute arbitrary commands on the system.
The vulnerability exists due to insufficient input validation in username on proper authentication after account creation. A remote administrator can create users with usernames containing bash syntax that evaluates code and execute arbitrary commands on the system.
Affected software
QNAP QTS
How to mitigate CVE-2018-19949
Install updates from vendor's website.
QNAP QTS - update to 4.4.1.1216 20200214