What is the CVSS score of CVE-2021-3803?

CVE-2021-3803 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 2.2%.

Is there a public PoC exploit available for CVE-2021-3803?

Yes, a public proof-of-concept exploit is available for CVE-2021-3803. Prioritise patching immediately. EPSS: 2.2%.

Is there a patch available for CVE-2021-3803?

Yes, a patch is available for CVE-2021-3803. Update the affected software to the latest version immediately.

Nth Check CVE-2021-3803

HIGH

Inefficient Regular Expression Complexity (ReDoS) (CWE-1333)

2021-09-17 security@huntr.dev

Denial Of Service Nth Check Debian Linux

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Sep 17, 2021 - 07:15 nvd

HIGH 7.5

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

6 npm packages depend on nth-check (6 direct, 0 indirect)

Ecosystem-wide dependent count for version 2.0.1.

DescriptionNVD

nth-check is vulnerable to Inefficient Regular Expression Complexity

AnalysisAI

nth-check is vulnerable to Inefficient Regular Expression Complexity. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified under CWE-1333. nth-check is vulnerable to Inefficient Regular Expression Complexity Affected products include: Nth-Check Project Nth-Check, Debian Debian Linux.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.