extend up to 2.0.1/3.0.1 on npm Prototype injection

Summaryinfo

A vulnerability was found in extend up to 2.0.1/3.0.1 on npm and classified as critical. The affected element is an unknown function of the component Prototype Handler. Such manipulation leads to injection. This vulnerability is referenced as CVE-2018-16492. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in extend up to 2.0.1/3.0.1 on npm. It has been rated as critical. Affected by this issue is an unknown code of the component Prototype Handler. The manipulation with an unknown input leads to a injection vulnerability. Using CWE to declare the problem leads to CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A prototype pollution vulnerability was found in module extend <2.0.2, ~<3.0.2 that allows an attacker to inject arbitrary properties onto Object.prototype.

The bug was discovered 08/22/2018. The weakness was published 02/01/2019 (Website). The advisory is shared for download at hackerone.com. This vulnerability is handled as CVE-2018-16492 since 09/04/2018. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1055.

The vulnerability was handled as a non-public zero-day exploit for at least 163 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 2.0.2 or 3.0.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2019-0333). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• NPM Package

Name

• extend

Version

• 2.0.0
• 2.0.1
• 3.0.0
• 3.0.1

CPE 2.3info

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CPE 2.2info

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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