Advisory Details

May 19th, 2024

(Pwn2Own) QNAP TS-464 HLS_tmp Directory Traversal Arbitrary File Creation Vulnerability

CVE ID	CVE-2023-51365
CVSS SCORE	6.5, AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
AFFECTED VENDORS	QNAP
AFFECTED PRODUCTS	TS-464
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on affected installations of QNAP TS-464 NAS devices. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the HLS_tmp parameter provided to the share.cgi endpoint. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to create or modify files in the context of admin.
ADDITIONAL DETAILS	QNAP has issued an update to correct this vulnerability. More details can be found at: https://www.qnap.com/en/security-advisory/qsa-24-14
DISCLOSURE TIMELINE	2023-11-09 - Vulnerability reported to vendor 2024-05-19 - Coordinated public release of advisory 2024-07-01 - Advisory Updated
CREDIT	Thalium team

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