What is the CVSS score of CVE-2022-35923?

CVE-2022-35923 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: 1.4%.

Is there a public PoC exploit available for CVE-2022-35923?

Yes, a public proof-of-concept exploit is available for CVE-2022-35923. Prioritise patching immediately. EPSS: 1.4%.

Is there a patch available for CVE-2022-35923?

Yes, a patch is available for CVE-2022-35923. Update the affected software to the latest version immediately.

V8N CVE-2022-35923

HIGH

Uncontrolled Resource Consumption (CWE-400)

2022-08-02 security-advisories@github.com

Denial Of Service V8N

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

Aug 02, 2022 - 20:15 nvd

HIGH 7.5

Blast Radius

ecosystem impact

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

267 npm packages depend on v8n (22 direct, 245 indirect)

Ecosystem-wide dependent count for version 1.5.1.

DescriptionNVD

v8n is a javascript validation library. Versions of v8n prior to 1.5.1 were found to have an inefficient regular expression complexity in the lowercase() and uppercase() regex which could lead to a denial of service attack. In testing of the lowercase() function a payload of 'a' + 'a'.repeat(i) + 'A' with 32 leading characters took 29443 ms to execute. The same issue happens with uppercase(). Users are advised to upgrade. There are no known workarounds for this issue.

AnalysisAI

v8n is a javascript validation library. 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 as Uncontrolled Resource Consumption (CWE-400), which allows attackers to cause denial of service by exhausting system resources. v8n is a javascript validation library. Versions of v8n prior to 1.5.1 were found to have an inefficient regular expression complexity in the lowercase() and uppercase() regex which could lead to a denial of service attack. In testing of the lowercase() function a payload of 'a' + 'a'.repeat(i) + 'A' with 32 leading characters took 29443 ms to execute. The same issue happens with uppercase(). Users are advised to upgrade. There are no known workarounds for this issue. Affected products include: V8N Project V8N. Version information: prior to 1.5.1.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Implement rate limiting, set resource quotas, validate input sizes, use timeouts.