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Externally Controlled Reference to a Resource in Another Sphere and Confused Deputy in Spring Cloud Netflix

Moderate severity GitHub Reviewed Published Apr 30, 2021 to the GitHub Advisory Database • Updated Feb 1, 2023

Package

maven org.springframework.cloud:spring-cloud-netflix (Maven)

Affected versions

>= 2.2.0, < 2.2.4
>= 2.1.0, < 2.1.6

Patched versions

2.2.4
2.1.6

Description

Spring Cloud Netflix, versions 2.2.x prior to 2.2.4, versions 2.1.x prior to 2.1.6, and older unsupported versions allow applications to use the Hystrix Dashboard proxy.stream endpoint to make requests to any server reachable by the server hosting the dashboard. A malicious user, or attacker, can send a request to other servers that should not be exposed publicly.

References

Published by the National Vulnerability Database Aug 7, 2020
Reviewed Apr 27, 2021
Published to the GitHub Advisory Database Apr 30, 2021
Last updated Feb 1, 2023

Severity

Moderate

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
High
Privileges required
Low
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
High
Availability
None

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:H/PR:L/UI:R/S:C/C:L/I:H/A:N

EPSS score

20.965%
(96th percentile)

Weaknesses

CVE ID

CVE-2020-5412

GHSA ID

GHSA-qgcg-p3v2-9h4p

Source code

No known source code
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