#VU54221 Unprotected storage of credentials in QNAP Systems, Inc. products - CVE-2021-28815

Vulnerability identifier: #VU54221

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-28815

CWE-ID: CWE-256

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
QNAP QTS
Server applications / File servers (FTP/HTTP)
QuTS hero
Hardware solutions / Firmware
QuTScloud
Operating systems & Components / Operating system
myQNAPcloud Link
Other software / Other software solutions

Vendor: QNAP Systems, Inc.

Description

The vulnerability allows a remote attacker to gain access to other users' credentials.

The vulnerability exists due to insecure storage of sensitive information. A remote attacker can access the unrestricted storage mechanism to read sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

QNAP QTS: before 4.5.3, 4.5.3

QuTS hero: before h4.5.2

QuTScloud: before c4.5.4

myQNAPcloud Link: before 2.2.21

---

External links
https://www.qnap.com/zh-tw/security-advisory/qsa-21-26

---

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.