CVE-2020-28472 Prototype Pollution
Attackers can pollute the application prototype via malicious INI files, potentially leading to code execution or privilege escalation in applications using the AWS SDK.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-28472?
CVE-2020-28472 is a high-severity vulnerability in @aws-sdk/shared-ini-file-loader, published on 19 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
This affects the package @aws-sdk/shared-ini-file-loader before 1.0.0-rc.9; the package aws-sdk before 2.814.0. If an attacker submits a malicious INI file to an application that parses it with loadSharedConfigFiles , they will pollute the prototype on the application. This can be exploited further depending on the context.
Which versions are affected by CVE-2020-28472?
4 open source packages ship an affected version, including @aws-sdk/shared-ini-file-loader and aws-sdk. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
@aws-sdk/shared-ini-file-loader npm | All versions | 1.0.0-rc.9 |
@aws-sdk/shared-ini-file-loader npm | All versions | 1.0.0-rc.9 |
aws-sdk npm | All versions | 2.814.0 |
aws-sdk npm | All versions | 2.814.0 |
Products include Amazon Aws Sdk for Javascipt, Amazon Aws Shared Configuration File Loader.
How do I fix CVE-2020-28472?
Upgrade @aws-sdk/shared-ini-file-loader to 1.0.0-rc.9 or later.
Is CVE-2020-28472 being exploited?
There is no known exploitation of CVE-2020-28472 in the wild and no public exploit code.
Sources
Also known as CLSA-2026-1771891824, GHSA-rrc9-gqf8-8rwg.