Vulnerabilities in pkg:maven/org.springframework.cloud/spring-cloud-netflix

PACKAGE
Advisory Identifier: GHSA-qgcg-p3v2-9h4p
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Advisory Summary

CVE-2020-5412 is a MODERATE (CVSS 6.5) remote code execution vulnerability (CWE-441: Unintended Proxy or Intermediary ('Confused Deputy')) affecting Spring Framework libraries in the Maven ecosystem. The issue involves externally controlled reference to a resource in another sphere and confused deputy in spring cloud netflix. Remediation is available by upgrading affected packages to version 2.2.4, 2.1.6.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:maven/org.springframework.cloud/spring-cloud-netflix

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:maven/org.springframework.cloud/spring-cloud-netflix. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-qgcg-p3v2-9h4p CVE-2020-5412 MODERATE Externally Controlled Reference to a Resource in Another Sphere and Confused Deputy in Spring Cloud Netflix

CVE-2020-5412 at a Glance

CVE Identifier CVE-2020-5412
GHSA Identifier GHSA-qgcg-p3v2-9h4p
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-441: Unintended Proxy or Intermediary ('Confused Deputy')
Affected Product Spring Framework
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 6.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2020-5412

To remediate this vulnerability, upgrade all affected Spring Framework dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.springframework.cloud:spring-cloud-netflix fixed: 2.2.4 
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-netflix</artifactId>
    <version>2.2.4</version>
</dependency>
org.springframework.cloud:spring-cloud-netflix fixed: 2.1.6 
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-netflix</artifactId>
    <version>2.1.6</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.springframework.cloud

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2020-5412, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.springframework.cloud

Analyze the terminal output to locate any version of Spring Framework in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.2.4), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.springframework.cloud command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-441: Unintended Proxy or Intermediary ('Confused Deputy'), where the product receives a request, message, or directive from an upstream component, but the product does not sufficiently preserve the original source of the request before forwarding the request to an external actor that is outside of the product's control sphere. this causes the product to appear to be the source of the request, leading it to act as a proxy or other intermediary between the upstream component and the external actor. In Spring Framework, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2020-5412 Affected Spring Framework Versions

2 component(s)
Fixed Versions:
2.2.42.1.6
Product / Package Ecosystem Affected Versions Fixed Version
org.springframework.cloud:spring-cloud-netflix
maven/org.springframework.cloud/spring-cloud-netflix
Maven
≥ 2.2.0
< 2.2.4
2.2.4
org.springframework.cloud:spring-cloud-netflix
maven/org.springframework.cloud/spring-cloud-netflix
Maven
≥ 2.1.0
< 2.1.6
2.1.6

References

NVD — CVE-2020-5412 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-5412
Spring Framework Security Information SECURITY
https://tanzu.vmware.com/security/cve-2020-5412

Frequently Asked Questions

What is CVE-2020-5412?
CVE-2020-5412 is a security vulnerability in Spring Framework involving Externally Controlled Reference to a Resource in Another Sphere and Confused Deputy in Spring Cloud Netflix under CWE-441: Unintended Proxy or Intermediary ('Confused Deputy').
Which Spring Framework versions are affected?
Affected versions include releases prior to 2.2.4, 2.1.6 across affected packages: org.springframework.cloud:spring-cloud-netflix.
What version fixes CVE-2020-5412?
Upgrading to 2.2.4, 2.1.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is spring-cloud-netflix affected?
Yes, org.springframework.cloud:spring-cloud-netflix is affected in releases prior to 2.2.4, 2.1.6. Upgrade your dependency to 2.2.4, 2.1.6 or later.
What is the CVSS score of CVE-2020-5412?
CVE-2020-5412 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:N.
What CWE is associated with CVE-2020-5412?
CVE-2020-5412 is classified under CWE-441: Unintended Proxy or Intermediary ('Confused Deputy') (The product receives a request, message, or directive from an upstream component, but the product does not sufficiently preserve the original source of the request before forwarding the request to an external actor that is outside of the product's control sphere. This causes the product to appear to be the source of the request, leading it to act as a proxy or other intermediary between the upstream component and the external actor.).
How can I check Maven dependencies for CVE-2020-5412?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.springframework.cloud'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-qgcg-p3v2-9h4p",
  "modified" : "2021-04-27T21:33:12Z",
  "published" : "2021-04-30T17:29:42Z",
  "aliases" : [ "CVE-2020-5412" ],
  "summary" : "Externally Controlled Reference to a Resource in Another Sphere and Confused Deputy in Spring Cloud Netflix",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework.cloud:spring-cloud-netflix"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.2.0"
      }, {
        "fixed" : "2.2.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework.cloud:spring-cloud-netflix"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.1.0"
      }, {
        "fixed" : "2.1.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-5412"
  }, {
    "type" : "WEB",
    "url" : "https://tanzu.vmware.com/security/cve-2020-5412"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-441", "CWE-610" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-04-27T21:33:12Z",
    "nvd_published_at" : "2020-08-07T21:15:00Z"
  }
}