An issue was discovered in QSC Q-SYS Core Manager 8.2.1. By utilizing the TFTP service running on UDP port 69, a remote attacker can perform a directory traversal and obtain operating system files via a TFTP GET request, as demonstrated by reading /etc/passwd or /proc/version.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-24990
Reference (s):
- http://packetstormsecurity.com/files/159699/QSC-Q-SYS-Core-Manager-8.2.1-Directory-Traversal.html
- http://seclists.org/fulldisclosure/2020/Oct/30
- https://q-syshelp.qsc.com/Content/Core_Manager/CoreManager_Overview.htm