CVE-2021-43138
HIGHCVSS 7.8/10EPSS 3.35%
Last modified
CVE-2021-43138 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 3.35% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Async Project | Async | < 2.6.4 |
| Async Project | Async | >= 3.0.0, < 3.2.2 |
| Fedoraproject | Fedora | 36 |
| Fedoraproject | Fedora | 37 |
References
- https://github.com/caolan/async/blob/master/lib/internal/iterator.jsThird Party Advisory
- https://github.com/caolan/async/blob/master/lib/mapValuesLimit.jsThird Party Advisory
- https://github.com/caolan/async/blob/v2.6.4/CHANGELOG.md#v264Release Notes, Third Party Advisory
- https://github.com/caolan/async/commit/e1ecdbf79264f9ab488c7799f4c76996d5dca66dPatch, Third Party Advisory
- https://github.com/caolan/async/compare/v2.6.3...v2.6.4Patch, Third Party Advisory
- https://github.com/caolan/async/pull/1828Patch, Third Party Advisory
- https://jsfiddle.net/oz5twjd9/Exploit, Third Party Advisory
- https://github.com/caolan/async/blob/master/lib/internal/iterator.jsThird Party Advisory
- https://github.com/caolan/async/blob/master/lib/mapValuesLimit.jsThird Party Advisory
- https://github.com/caolan/async/blob/v2.6.4/CHANGELOG.md#v264Release Notes, Third Party Advisory
- https://github.com/caolan/async/commit/e1ecdbf79264f9ab488c7799f4c76996d5dca66dPatch, Third Party Advisory
- https://github.com/caolan/async/compare/v2.6.3...v2.6.4Patch, Third Party Advisory
- https://github.com/caolan/async/pull/1828Patch, Third Party Advisory
- https://jsfiddle.net/oz5twjd9/Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2021-43138?
CVE-2021-43138 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 3.35% probability of exploitation in the next 30 days.
How do I fix CVE-2021-43138?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-43138?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST