QNAP QVPN prior 2.2.0.0823 on Windows cleartext transmission

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in QNAP QVPN on Windows. It has been classified as problematic. Impacted is an unknown function. This manipulation causes cleartext transmission. This vulnerability is tracked as CVE-2023-23371. The attack is restricted to local execution. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in QNAP QVPN on Windows. It has been declared as problematic. Affected by this vulnerability is an unknown code block. The manipulation with an unknown input leads to a cleartext transmission vulnerability. The CWE definition for the vulnerability is CWE-319. The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors. As an impact it is known to affect confidentiality. The summary by CVE is:

A cleartext transmission of sensitive information vulnerability has been reported to affect QVPN Device Client. If exploited, the vulnerability could allow local authenticated administrators to read sensitive data via unspecified vectors. We have already fixed the vulnerability in the following version: QVPN Windows 2.2.0.0823 and later

The weakness was disclosed 10/06/2023 as qsa-23-39. The advisory is shared at qnap.com. This vulnerability is known as CVE-2023-23371 since 01/11/2023. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1040 for this issue.

Upgrading to version 2.2.0.0823 eliminates this vulnerability.

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Productinfo

Vendor

QNAP

Name

QVPN

License

commercial

Website

Vendor: https://www.qnap.com/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.6
VulDB Meta Temp Score: 3.5

VulDB Base Score: 2.0
VulDB Temp Score: 1.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 5.2
CNA Vector (QNAP Systems, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Cleartext transmission
CWE: CWE-319 / CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: QVPN 2.2.0.0823

Timelineinfo

01/11/2023 🔍
10/06/2023 +267 days 🔍
10/06/2023 +0 days 🔍
10/06/2023 +0 days 🔍

Sourcesinfo

Vendor: qnap.com

Advisory: qsa-23-39
Status: Confirmed

CVE: CVE-2023-23371 (🔍)
GCVE (CVE): GCVE-0-2023-23371
GCVE (VulDB): GCVE-100-241477

Entryinfo

Created: 10/06/2023 21:54
Changes: 10/06/2023 21:54 (50)
Complete: 🔍
Cache ID: 216::103