CVE-2021-34343

Buffer Overflow Vulnerability in QTS, QuTS hero, and QuTScloud

Severity Score

7.2

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A stack buffer overflow vulnerability has been reported to affect QNAP device running QTS, QuTScloud, QuTS hero. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of QTS, QuTScloud, QuTS hero: QTS 4.5.4.1715 build 20210630 and later QTS 5.0.0.1716 build 20210701 and later QuTScloud c4.5.6.1755 and later QuTS hero h4.5.4.1771 build 20210825 and later

Se ha reportado de una vulnerabilidad de desbordamiento del búfer de la pila que afecta al dispositivo QNAP que ejecuta QTS, QuTScloud, QuTS hero. Si es explotado, esta vulnerabilidad permite a atacantes ejecutar código arbitrario. Ya hemos corregido esta vulnerabilidad en las siguientes versiones de QTS, QuTScloud, QuTS hero: QTS 4.5.4.1715 build 20210630 y posteriores QTS 5.0.0.1716 build 20210701 y posteriores QuTScloud c4.5.6.1755 y posteriores QuTS hero h4.5.4.1771 build 20210825 y posteriores

*Credits: Bingwei Peng of VARAS@IIE

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-06-08 CVE Reserved
2021-09-10 CVE Published
2023-04-03 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-787: Out-of-bounds Write

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.qnap.com/en/security-advisory/qsa-21-33	2022-02-10

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"				< 4.3.3.1693 Search vendor "Qnap" for product "Qts" and version " < 4.3.3.1693"		-		Affected
Qnap Search vendor "Qnap"		Qts Search vendor "Qnap" for product "Qts"				>= 4.3.4 < 4.3.6.1750 Search vendor "Qnap" for product "Qts" and version " >= 4.3.4 < 4.3.6.1750"		-		Affected
Qnap Search vendor "Qnap"		Qts Search vendor "Qnap" for product "Qts"				>= 4.4.0 < 4.5.4.1715 Search vendor "Qnap" for product "Qts" and version " >= 4.4.0 < 4.5.4.1715"		-		Affected
Qnap Search vendor "Qnap"		Qts Search vendor "Qnap" for product "Qts"				>= 5.0.0 < 5.0.0.1716 Search vendor "Qnap" for product "Qts" and version " >= 5.0.0 < 5.0.0.1716"		-		Affected
Qnap Search vendor "Qnap"		Quts Hero Search vendor "Qnap" for product "Quts Hero"				< h4.5.4.1771 Search vendor "Qnap" for product "Quts Hero" and version " < h4.5.4.1771"		-		Affected
Qnap Search vendor "Qnap"		Qutscloud Search vendor "Qnap" for product "Qutscloud"				< c4.5.6.1755 Search vendor "Qnap" for product "Qutscloud" and version " < c4.5.6.1755"		-		Affected