Cross-site scripting in QNAP Q'center



Published: 2021-06-03
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-28807
CWE-ID CWE-79
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Q’center
Server applications / SCADA systems

QNAP QTS
Server applications / File servers (FTP/HTTP)

QuTS hero
Hardware solutions / Firmware

QuTScloud
Operating systems & Components / Operating system

Vendor

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Cross-site scripting

EUVDB-ID: #VU53762

Risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-28807

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote authenticated attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Q’center: before 1.12.1012

QNAP QTS: before 4.5.3

QuTS hero: before h4.5.2

QuTScloud: before c4.5.4

External links

http://www.qnap.com/zh-tw/security-advisory/qsa-21-20


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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



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