CVE-2019-20149 Validation Bypass in kind-of
Attackers can manipulate type detection results in kind-of by overwriting internal attributes, potentially bypassing security checks relying on this library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-20149?
CVE-2019-20149 is a high-severity vulnerability in n/a, published on 30 Dec 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
ctorName in index.js in kind-of v6.0.2 allows external user input to overwrite certain internal attributes via a conflicting name, as demonstrated by 'constructor': {'name':'Symbol'}. Hence, a crafted payload can overwrite this builtin attribute to manipulate the type detection result.
Weakness: CWE-668
Which versions are affected by CVE-2019-20149?
2 open source packages ship an affected version, including kind-of. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
kind-of npm | From 6.0.0 | 6.0.3 |
kind-of npm | From 6.0.0 | 6.0.3 |
Products include Kind-of Project Kind-Of.
How do I fix CVE-2019-20149?
Upgrade kind-of to 6.0.3 or later.
Is CVE-2019-20149 being exploited?
There is no known exploitation of CVE-2019-20149 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as AZL-44298, AZL-47271, DEBIAN-CVE-2019-20149, GHSA-6c8f-qphg-qjgp, UBUNTU-CVE-2019-20149.