(Pwn2Own) QNAP TS-464 Netmgr Endpoint CRLF Injection Arbitrary Configuration Update Vulnerability

May 19th, 2024
ZDI-24-472 ZDI-CAN-22457

CVE ID

CVE-2024-32764

CVSS Score

7.4 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected Vendors

QNAP

Affected Products

TS-464

Vulnerability Details

This vulnerability allows remote attackers to create arbitrary configurations on affected installations of QNAP TS-464 NAS devices. An attacker must first obtain the ability to access the device's localhost interface, which can be accomplished using a malicious TURN server.

The specific flaw exists within the legacy_cgi endpoints. The issue results from the lack of proper validation of a user-supplied string before using it to update configurations. An attacker can leverage this in conjunction with other vulnerabilities to create arbitrary configurations on the system.

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-24-09

Disclosure Timeline

  • 2023-11-15 - Vulnerability reported to vendor
  • 2024-05-19 - Coordinated public release of advisory
  • 2024-07-01 - Advisory Updated

Credit

Team ECQ

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