CVE-2022-21803 Prototype Pollution
Prototype pollution in nconf allows attackers to modify Object.prototype, potentially leading to code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-21803?
CVE-2022-21803 is a high-severity vulnerability in nconf, published on 12 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
This affects the package nconf before 0.11.4. When using the memory engine, it is possible to store a nested JSON representation of the configuration. The .set() function, that is responsible for setting the configuration properties, is vulnerable to Prototype Pollution. By providing a crafted property, it is possible to modify the properties on the Object.prototype.
Weakness: CWE-1321
Which versions are affected by CVE-2022-21803?
2 open source packages ship an affected version, including nconf. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
nconf npm | All versions | 0.11.4 |
nconf npm | All versions | 0.11.4 |
Products include Nconf Project Nconf.
How do I fix CVE-2022-21803?
Upgrade nconf to 0.11.4 or later.
Is CVE-2022-21803 being exploited?
There is no known exploitation of CVE-2022-21803 in the wild and no public exploit code.
Sources
Also known as GHSA-6xwr-q98w-rvg7.