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Directory traversal attack in Spring Cloud Config

Moderate severity GitHub Reviewed Published Jun 5, 2020 to the GitHub Advisory Database • Updated Feb 1, 2023

Package

maven org.springframework.cloud:spring-cloud-config-server (Maven)

Affected versions

>= 2.1.0, < 2.1.7
>= 2.2.0, < 2.2.2

Patched versions

2.1.7
2.2.2

Description

Spring Cloud Config, versions 2.2.x prior to 2.2.2, versions 2.1.x prior to 2.1.7, and older unsupported versions allow applications to serve arbitrary configuration files through the spring-cloud-config-server module. A malicious user, or attacker, can send a request using a specially crafted URL that can lead a directory traversal attack.

References

Published by the National Vulnerability Database Mar 5, 2020
Reviewed Jun 4, 2020
Published to the GitHub Advisory Database Jun 5, 2020
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
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
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:L/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS score

0.366%
(73rd percentile)

Weaknesses

CVE ID

CVE-2020-5405

GHSA ID

GHSA-g86w-v5vg-9gxf

Source code

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