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QSC Q-SYS Core Manager 8.2.1 Directory Traversal

QSC Q-SYS Core Manager 8.2.1 Directory Traversal
Posted Oct 26, 2020
Authored by Kevin Randall

QSC Q-SYS Core Manager version 8.2.1 suffers from a TFTP related directory traversal vulnerability.

tags | advisory, file inclusion
advisories | CVE-2020-24990
SHA-256 | 76bf0314b2878aee4c5683f5b47353493f1439a510c2c3ba7b37d2f9048e5adb

QSC Q-SYS Core Manager 8.2.1 Directory Traversal

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[Suggested description]
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.

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[Vulnerability Type]
Directory Traversal

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[Vendor of Product]
QSC LLC

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[Affected Product Code Base]
Q-SYS Core Manager - Version 8.2.1

------------------------------------------

[Affected Component]
TFTP Service running on UDP port 69 allows for retrieval of arbitrary
files through a TFTP GET request

------------------------------------------

[Attack Type]
Remote

------------------------------------------

[Impact Information Disclosure]
true

------------------------------------------

[Attack Vectors]
Remote while unauthenticated to the system

------------------------------------------

[Reference]
https://q-syshelp.qsc.com/Content/Core_Manager/CoreManager_Overview.htm

------------------------------------------

[Discoverer]
Kevin Randall
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