CVE-2020-15256 Explained : Impact and Mitigation

A prototype pollution vulnerability has been found in

object-path

<= 0.11.4 affecting the

set()

method. The vulnerability is limited to the

includeInheritedProps

mode (if version >= 0.11.0 is used), which has to be explicitly enabled by creating a new instance of

object-path

and setting the option

includeInheritedProps: true

, or by using the default

withInheritedProps

instance. The default operating mode is not affected by the vulnerability if version >= 0.11.0 is used. Any usage of

set()

in versions < 0.11.0 is vulnerable. The issue is fixed in object-path version 0.11.5 As a workaround, don't use the

includeInheritedProps: true

options or the

withInheritedProps

instance if using a version >= 0.11.0.

Understanding CVE-2020-15256

This CVE identifies a prototype pollution vulnerability in the

object-path

library.

What is CVE-2020-15256?

Prototype pollution vulnerability in

object-path

<= 0.11.4 affecting the

set()

method.

The Impact of CVE-2020-15256

CVSS Base Score: 7.7 (High)
Attack Vector: Network
Attack Complexity: High
Privileges Required: None
User Interaction: None
Confidentiality Impact: Low
Integrity Impact: High
Availability Impact: High
Scope: Unchanged
Vulnerability Type: Prototype Pollution
CWE IDs: CWE-471, CWE-20

Technical Details of CVE-2020-15256

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability is due to prototype pollution in the

object-path

library.

Affected Systems and Versions

Affected Product: object-path
Vendor: mariocasciaro
Vulnerable Versions: <= 0.11.4

Exploitation Mechanism

The vulnerability affects the

set()

method in

object-path

<= 0.11.4 when using the

includeInheritedProps

mode.

Mitigation and Prevention

Protect your systems from the CVE-2020-15256 vulnerability.

Immediate Steps to Take

Upgrade to version 0.11.5 of

object-path

Avoid using the

includeInheritedProps: true

option or the

withInheritedProps

instance

Long-Term Security Practices

Regularly update libraries and dependencies
Implement input validation and sanitization practices

Patching and Updates

Apply the latest patches and updates provided by the vendor