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zdiThalium teamZDI-24-476
HistoryMay 19, 2024 - 12:00 a.m.

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

2024-05-1900:00:00
Thalium team
www.zerodayinitiative.com
13
remote attackers
qnap ts-464
arbitrary code execution
authentication bypass
directory traversal
file creation

8.7 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H

7.4 High

AI Score

Confidence

High

4 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:H/Au:N/C:N/I:P/A:P

0.001 Low

EPSS

Percentile

48.6%

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.

8.7 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H

7.4 High

AI Score

Confidence

High

4 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:H/Au:N/C:N/I:P/A:P

0.001 Low

EPSS

Percentile

48.6%

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