CVE-2021-28806

DOM-Based XSS Vulnerability in QTS and QuTS hero

Severity Score

5.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A DOM-based XSS vulnerability has been reported to affect QNAP NAS running QTS and QuTS hero. If exploited, this vulnerability allows attackers to inject malicious code. This issue affects: QNAP Systems Inc. QTS versions prior to 4.5.3.1652 Build 20210428. QNAP Systems Inc. QuTS hero versions prior to h4.5.2.1638 Build 20210414. QNAP Systems Inc. QuTScloud versions prior to c4.5.5.1656 Build 20210503. This issue does not affect: QNAP Systems Inc. QTS 4.3.6; 4.3.3.

Se ha reportado una vulnerabilidad de tipo XSS basada en DOM que afecta a los NAS de QNAP que ejecutan QTS y QuTS hero. Si es explotada, esta vulnerabilidad permite a los atacantes inyectar código malicioso. Este problema afecta: QNAP Systems Inc. QTS versiones anteriores a 4.5.3.1652 Build 20210428. QNAP Systems Inc. QuTS hero versiones anteriores a h4.5.2.1638 Build 20210414. QNAP Systems Inc. versiones de QuTScloud anteriores a versión c4.5.5.1656 Build 20210503. Este problema no afecta: QNAP Systems Inc. QTS versiones 4.3.6; 4.3.3

*Credits: Marcin Zięba

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-03-18 CVE Reserved
2021-06-03 CVE Published
2023-03-08 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

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

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.qnap.com/zh-tw/security-advisory/qsa-21-22	2021-06-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Qnap Search vendor "Qnap"		Qts Search vendor "Qnap" for product "Qts"				< 4.5.3.1652 Search vendor "Qnap" for product "Qts" and version " < 4.5.3.1652"		-		Affected
Qnap Search vendor "Qnap"		Quts Hero Search vendor "Qnap" for product "Quts Hero"				< h4.5.2.1638 Search vendor "Qnap" for product "Quts Hero" and version " < h4.5.2.1638"		-		Affected
Qnap Search vendor "Qnap"		Qutscloud Search vendor "Qnap" for product "Qutscloud"				< c4.5.5.1656 Search vendor "Qnap" for product "Qutscloud" and version " < c4.5.5.1656"		-		Affected