CVE-2020-25754: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-cq4j-2685-h9rw
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CWE-916
Published
Advisory Summary

CVE-2020-25754 is a HIGH security vulnerability vulnerability (CWE-916: Use of Password Hash With Insufficient Computational Effort) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product generates a hash for a password, but it uses a scheme that does not provide a sufficient level of computational effort that would make password cracking attacks infeasible or expensive.. Remediation is available in the latest vendor maintenance releases.

CVE-2020-25754 at a Glance

CVE Identifier CVE-2020-25754
GHSA Identifier GHSA-cq4j-2685-h9rw
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-916: Use of Password Hash With Insufficient Computational Effort
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2020-25754

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

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

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2020-25754, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

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

Note: The mvn dependency:tree 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-916: Use of Password Hash With Insufficient Computational Effort, where the product generates a hash for a password, but it uses a scheme that does not provide a sufficient level of computational effort that would make password cracking attacks infeasible or expensive. In Software, 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

An issue was discovered on Enphase Envoy R3.x and D4.x devices. There is a custom PAM module for user authentication that circumvents traditional user authentication. This module uses a password derived from the MD5 hash of the username and serial number. The serial number can be retrieved by an unauthenticated user at /info.xml. Attempts to change the user password via passwd or other tools have no effect.

References

stage2sec.com WEB
https://stage2sec.com
NVD — CVE-2020-25754 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-25754
enphase.com/en-us/products-and-... WEB
https://enphase.com/en-us/products-and-services/envoy-and-combiner
Software Security Information SECURITY
https://medium.com/stage-2-security/can-solar-controllers-be-used-to-generate-fake-clean-energy-credits-4a7322e7661a

Frequently Asked Questions

What is CVE-2020-25754?
CVE-2020-25754 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-916: Use of Password Hash With Insufficient Computational Effort.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2020-25754?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2020-25754?
CVE-2020-25754 is classified under CWE-916: Use of Password Hash With Insufficient Computational Effort (The product generates a hash for a password, but it uses a scheme that does not provide a sufficient level of computational effort that would make password cracking attacks infeasible or expensive.).
How can I check Maven dependencies for CVE-2020-25754?
Run the dependency tree command: 'mvn dependency:tree'. 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-cq4j-2685-h9rw",
  "modified" : "2022-05-24T19:05:25Z",
  "published" : "2022-05-24T19:05:25Z",
  "aliases" : [ "CVE-2020-25754" ],
  "details" : "An issue was discovered on Enphase Envoy R3.x and D4.x devices. There is a custom PAM module for user authentication that circumvents traditional user authentication. This module uses a password derived from the MD5 hash of the username and serial number. The serial number can be retrieved by an unauthenticated user at /info.xml. Attempts to change the user password via passwd or other tools have no effect.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-25754"
  }, {
    "type" : "WEB",
    "url" : "https://enphase.com/en-us/products-and-services/envoy-and-combiner"
  }, {
    "type" : "WEB",
    "url" : "https://medium.com/stage-2-security/can-solar-controllers-be-used-to-generate-fake-clean-energy-credits-4a7322e7661a"
  }, {
    "type" : "WEB",
    "url" : "https://stage2sec.com"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-916" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2021-06-16T19:15:00Z"
  }
}