CVE-2021-38689

Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard

Severity Score

9.8

*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 QVR Elite, QVR Pro, QVR Guard. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of QVR Elite, QVR Pro, QVR Guard: QuTS hero h5.0.0: QVR Elite 2.1.4.0 (2021/12/06) and later QuTS hero h4.5.4: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 5.0.0: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 4.5.4: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 4.5.4: QVR Pro 2.1.3.0 (2021/12/06) and later QTS 5.0.0: QVR Pro 2.1.3.0 (2021/12/06) and later QTS 4.5.4: QVR Guard 2.1.3.0 (2021/12/06) and later QTS 5.0.0: QVR Guard 2.1.3.0 (2021/12/06) and later

Se ha informado de una vulnerabilidad de desbordamiento del búfer de la pila que afecta al dispositivo de QNAP que ejecuta QVR Elite, QVR Pro, QVR Guard. Si es explotado, esta vulnerabilidad permite a atacantes ejecutar código arbitrario. Ya hemos corregido esta vulnerabilidad en las siguientes versiones de QVR Elite, QVR Pro, QVR Guard: QuTS hero h5.0.0: QVR Elite 2.1.4.0 (06/12/2021) y posteriores QuTS hero h4.5.4: QVR Elite 2.1.4.0 (06/12/2021) y posteriores QTS 5.0.0: QVR Elite 2.1.4.0 (06/12/2021) y posteriores QTS 4.5.4: QVR Elite 2.1.4.0 (06/12/2021) y posteriores QTS 4.5.4: QVR Pro 2.1.3.0 (06/12/2021) y posteriores QTS 5.0.0: QVR Pro 2.1.3.0 (06/12/2021) y posteriores QTS 4.5.4: QVR Guard 2.1.3.0 (06/12/2021) y posteriores QTS 5.0.0: QVR Guard 2.1.3.0 (06/12/2021) y posteriores

*Credits: crixer

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-08-13 CVE Reserved
2022-01-14 CVE Published
2024-08-19 EPSS Updated
2024-09-17 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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-21-59	2022-01-25

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Qnap Search vendor "Qnap"		Qvr Elite Search vendor "Qnap" for product "Qvr Elite"				< 2.1.4.0 Search vendor "Qnap" for product "Qvr Elite" and version " < 2.1.4.0"		-		Affected
Qnap Search vendor "Qnap"		Qvr Guard Search vendor "Qnap" for product "Qvr Guard"				< 2.1.3.0 Search vendor "Qnap" for product "Qvr Guard" and version " < 2.1.3.0"		-		Affected
Qnap Search vendor "Qnap"		Qvr Pro Search vendor "Qnap" for product "Qvr Pro"				< 2.1.3.0 Search vendor "Qnap" for product "Qvr Pro" and version " < 2.1.3.0"		-		Affected