VDB-185886 · CVE-2021-3765 · GCVE-0-2021-3765

validator.js Regular Expression denial of service

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.
5.2	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in validator.js. This affects an unknown function of the component Regular Expression Handler. The manipulation results in denial of service. This vulnerability is identified as CVE-2021-3765. The attack can be executed remotely. There is not any exploit available. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability classified as problematic has been found in validator.js (JavaScript Library) (affected version unknown). Affected is an unknown functionality of the component Regular Expression Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability.

The weakness was released 11/02/2021. The advisory is available at huntr.dev. This vulnerability is traded as CVE-2021-3765 since 09/03/2021. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Applying the patch 496fc8b2a7f5997acaaec33cc44d0b8dba5fb5e1 is able to eliminate this problem. The bugfix is ready for download at github.com.

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Productinfo

Type

JavaScript Library

Name

validator.js

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector (huntr.dev): 🔍

CVSSv2info

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

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

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

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 496fc8b2a7f5997acaaec33cc44d0b8dba5fb5e1

Timelineinfo

09/03/2021 🔍
11/02/2021 +60 days 🔍
11/02/2021 +0 days 🔍
11/05/2021 +3 days 🔍

Sourcesinfo

Advisory: 496fc8b2a7f5997acaaec33cc44d0b8dba5fb5e1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-3765 (🔍)
GCVE (CVE): GCVE-0-2021-3765
GCVE (VulDB): GCVE-100-185886

Entryinfo

Created: 11/02/2021 13:00
Updated: 11/05/2021 01:20
Changes: 11/02/2021 13:00 (49), 11/05/2021 01:20 (3)
Complete: 🔍
Cache ID: 216::103