VDB-239114 · CVE-2023-3747 · GCVE-0-2023-3747

Cloudflare WARP Client client-side enforcement of server-side security

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.
3.8	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Cloudflare WARP Client. The impacted element is an unknown function. Such manipulation leads to client-side enforcement of server-side security. This vulnerability is traded as CVE-2023-3747. An attack has to be approached locally. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Cloudflare WARP Client (Cloud Software) (affected version unknown). Affected by this issue is an unknown functionality. The manipulation with an unknown input leads to a client-side enforcement of server-side security vulnerability. Using CWE to declare the problem leads to CWE-602. The product is composed of a server that relies on the client to implement a mechanism that is intended to protect the server. Impacted is availability. CVE summarizes:

Zero Trust Administrators have the ability to disallow end users from disabling WARP on their devices. Override codes can also be created by the Administrators to allow a device to temporarily be disconnected from WARP, however, due to lack of server side validation, an attacker with local access to the device, could extend the maximum allowed disconnected time of WARP client granted by an override code by changing the date & time on the local device where WARP is running.

The weakness was shared 09/07/2023. This vulnerability is handled as CVE-2023-3747 since 07/18/2023. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Cloud Software

Vendor

Cloudflare

Name

WARP Client

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.8
VulDB Meta Temp Score: 3.8

VulDB Base Score: 2.2
VulDB Temp Score: 2.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 5.5
CNA Vector (Cloudflare, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Client-side enforcement of server-side security
CWE: CWE-602
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/18/2023 🔍
09/07/2023 +51 days 🔍
09/07/2023 +0 days 🔍
10/04/2023 +27 days 🔍

Sourcesinfo

Advisory: developers.cloudflare.com
Status: Confirmed

CVE: CVE-2023-3747 (🔍)
GCVE (CVE): GCVE-0-2023-3747
GCVE (VulDB): GCVE-100-239114

Entryinfo

Created: 09/07/2023 15:36
Updated: 10/04/2023 07:08
Changes: 09/07/2023 15:36 (45), 10/04/2023 07:08 (1)
Complete: 🔍
Cache ID: 216::103