CVE-2021-43138

Published: Apr 6, 2022Modified: Jun 17, 2026

7.8

Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitability: 1.8 / Impact: 5.9

Source: NVD

Description

In Async before 2.6.4 and 3.x before 3.2.2, a malicious user can obtain privileges via the mapValues() method, aka lib/internal/iterator.js createObjectIterator prototype pollution.

Affected (4)

Products: Async Project: Async · Fedoraproject: Fedora

1 product

1 product

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Async Project Async	Before 2.6.4
Async Project Async	From 3.0.0 to 3.2.2

Configuration B

2 vulnerable

Vulnerable Software	Affected Versions
Fedoraproject Fedora	Version 36
Fedoraproject Fedora	Version 37

Related CWEs

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.

References (20)

https://github.com/caolan/async/blob/master/lib/internal/iterator.js

Source: cve@mitre.org

Third Party Advisory

https://github.com/caolan/async/blob/master/lib/mapValuesLimit.js

Source: cve@mitre.org

Third Party Advisory

https://github.com/caolan/async/blob/v2.6.4/CHANGELOG.md#v264

Source: cve@mitre.org

Release NotesThird Party Advisory

https://github.com/caolan/async/commit/e1ecdbf79264f9ab488c7799f4c76996d5dca66d

Source: cve@mitre.org

PatchThird Party Advisory

https://github.com/caolan/async/compare/v2.6.3...v2.6.4

Source: cve@mitre.org

PatchThird Party Advisory

https://github.com/caolan/async/pull/1828

Source: cve@mitre.org

PatchThird Party Advisory

https://jsfiddle.net/oz5twjd9/

Source: cve@mitre.org

ExploitThird Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTEUUTNIEBHGKUKKLNUZSV7IEP6IP3Q3/

Source: cve@mitre.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UM6XJ73Q3NAM5KSGCOKJ2ZIA6GUWUJLK/

Source: cve@mitre.org

https://security.netapp.com/advisory/ntap-20240621-0006/

Source: cve@mitre.org

https://github.com/caolan/async/blob/master/lib/internal/iterator.js