Vulnerability identifier: #VU64034

Vulnerability risk: High

CVSSv3.1:

CVE-ID: CVE-2021-3918

CWE-ID:

Exploitation vector: Network

Exploit availability:

Vulnerable software:
JSON schema
Web applications / JS libraries

Vendor: Tom de Grunt

Description

The disclosed vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to insufficient sanitization of user-supplied data during the validation of a JSON object. A remote attacker can pass a specially crafted JSON file for validation and execute arbitrary code.

Mitigation
Install update from vendor's website.

Vulnerable software versions

JSON schema: 0.0.0 - 0.3.2

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Fixed software versions

CPE

• cpe:2.3:a:tdegrunt:json-schema:0.3.2:*:*:*:*:nodejs:*:*

External links
http://github.com/kriszyp/json-schema/commit/22f146111f541d9737e832823699ad3528ca7741
http://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55f-cd2662c261a9

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?