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Prototype Pollution via file load in aws-sdk and @aws-sdk/shared-ini-file-loader

High severity GitHub Reviewed Published Nov 16, 2021 to the GitHub Advisory Database • Updated Jan 29, 2023

Package

npm @aws-sdk/shared-ini-file-loader (npm)

Affected versions

<= 1.0.0-rc.8

Patched versions

1.0.0-rc.9
npm aws-sdk (npm)
< 2.814.0
2.814.0

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.

References

Published by the National Vulnerability Database Jan 19, 2021
Reviewed Apr 6, 2021
Published to the GitHub Advisory Database Nov 16, 2021
Last updated Jan 29, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS score

1.386%
(87th percentile)

Weaknesses

CVE ID

CVE-2020-28472

GHSA ID

GHSA-rrc9-gqf8-8rwg

Source code

No known source code

Credits

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