CVE-2021-43138

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.

Weakness

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.

Affected Software

Potential Mitigations

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/1.html
• https://cwe.mitre.org/data/definitions/180.html
• https://cwe.mitre.org/data/definitions/77.html

References

• https://github.com/caolan/async/blob/master/lib/internal/iterator.js
• https://github.com/caolan/async/blob/master/lib/mapValuesLimit.js
• https://github.com/caolan/async/blob/v2.6.4/CHANGELOG.md#v264
• https://github.com/caolan/async/commit/e1ecdbf79264f9ab488c7799f4c76996d5dca66d
• https://github.com/caolan/async/compare/v2.6.3...v2.6.4
• https://github.com/caolan/async/pull/1828
• https://jsfiddle.net/oz5twjd9/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTEUUTNIEBHGKUKKLNUZSV7IEP6IP3Q3/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UM6XJ73Q3NAM5KSGCOKJ2ZIA6GUWUJLK/
• https://security.netapp.com/advisory/ntap-20240621-0006/
• https://github.com/caolan/async/blob/master/lib/internal/iterator.js
• https://github.com/caolan/async/blob/master/lib/mapValuesLimit.js
• https://github.com/caolan/async/blob/v2.6.4/CHANGELOG.md#v264
• https://github.com/caolan/async/commit/e1ecdbf79264f9ab488c7799f4c76996d5dca66d
• https://github.com/caolan/async/compare/v2.6.3...v2.6.4
• https://github.com/caolan/async/pull/1828
• https://jsfiddle.net/oz5twjd9/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTEUUTNIEBHGKUKKLNUZSV7IEP6IP3Q3/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UM6XJ73Q3NAM5KSGCOKJ2ZIA6GUWUJLK/
• https://security.netapp.com/advisory/ntap-20240621-0006/