CVE-2021-43138 Information

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.

CVSS Vector

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

Reference

https://github.com/caolan/async/blob/master/lib/mapValuesLimit.js https://jsfiddle.net/oz5twjd9/ https://github.com/caolan/async/blob/master/lib/internal/iterator.js https://github.com/caolan/async/commit/e1ecdbf79264f9ab488c7799f4c76996d5dca66d https://github.com/caolan/async/pull/1828 https://github.com/caolan/async/blob/v2.6.4/CHANGELOG.md#v264 https://github.com/caolan/async/compare/v2.6.3…v2.6.4

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8