#VU100899 Format string error in QNAP QTS and QuTS hero - CVE-2024-50396

Vulnerability identifier: #VU100899

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2024-50396

CWE-ID: CWE-134

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
QNAP QTS
Server applications / File servers (FTP/HTTP)
QuTS hero
Hardware solutions / Firmware

Vendor: QNAP Systems, Inc.

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to externally-controlled format string error. A remote attacker can supply a specially crafted input that contains format string specifiers and obtain secret data or modify memory.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

QNAP QTS: before 5.2.1.2930, 5.2.1.2930

QuTS hero: before h5.2.1.2929 build 20241025

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External links
https://www.qnap.com/en/security-advisory/qsa-24-43

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.