CVE-2021-23434 Prototype Pollution
Attackers can bypass prototype pollution protections in the object-path library by using array path components, potentially leading to unexpected behavior.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-23434?
CVE-2021-23434 is a medium-severity vulnerability in Debian Debian Linux, published on 27 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
This affects the package object-path before 0.11.6. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition currentPath === '__proto__' returns false if currentPath is ['__proto__']. This is because the === operator returns always false when the type of the operands is different.
Weakness: CWE-843
Which versions are affected by CVE-2021-23434?
2 open source packages ship an affected version, including object-path. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
object-path npm | All versions | 0.11.6 |
object-path npm | All versions | 0.11.6 |
Products include Debian Debian Linux, Object-Path Project Object-Path.
How do I fix CVE-2021-23434?
Upgrade object-path to 0.11.6 or later.
Is CVE-2021-23434 being exploited?
There is no known exploitation of CVE-2021-23434 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2021-23434, GHSA-v39p-96qg-c8rf, UBUNTU-CVE-2021-23434.