CVE-2020-9585: Magento/community edition Magento Defense-in-depth Security Mitigation Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-55gv-hfg3-hwjq
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CVSS 9.8
Published
Advisory Summary

CVE-2020-9585 is a CRITICAL (CVSS 9.8) magento defense-in-depth security mitigation vulnerability vulnerability (General Security Weakness) affecting Magento/community edition libraries in the Packagist ecosystem. The issue involves magento defense-in-depth security mitigation vulnerability. Remediation is available by upgrading affected packages to version 2.3.4-p2, 1.9.4.5.

CVE-2020-9585 at a Glance

CVE Identifier CVE-2020-9585
GHSA Identifier GHSA-55gv-hfg3-hwjq
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification General Security Weakness
Affected Product Magento/community edition
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 9.8

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

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

How to Fix CVE-2020-9585

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

magento/community-edition fixed: Latest secure release 
Upgrade magento/community-edition to Latest secure release
magento/community-edition fixed: 2.3.4-p2 
Upgrade magento/community-edition to 2.3.4-p2
magento/core fixed: 1.9.4.5 
Upgrade magento/core to 1.9.4.5
magento/project-community-edition fixed: Latest secure release 
Upgrade magento/project-community-edition to Latest secure release
Verify Direct and Transitive Dependencies

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

inspect dependencies for magento/community-edition

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-9585, inspect your project dependencies for Magento/community edition:

inspect dependencies for magento/community-edition

Analyze the terminal output to locate any version of Magento/community edition in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.3.4-p2), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Magento/community edition, 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

Magento versions 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 and earlier have a defense-in-depth security mitigation vulnerability. Successful exploitation could lead to arbitrary code execution.

CVE-2020-9585 Affected Magento/community edition Versions

4 component(s)
Fixed Versions:
2.3.4-p21.9.4.5
Product / Package Ecosystem Affected Versions Fixed Version
magento/community-edition
 Packagist
≤ 2.2.11
magento/community-edition
 Packagist
≥ 2.3.0
< 2.3.4-p2
2.3.4-p2
magento/core
 Packagist
< 1.9.4.5
1.9.4.5
magento/project-community-edition
 Packagist
≤ 2.0.2

References

NVD — CVE-2020-9585 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-9585
Magento/community edition Source Repository REPOSITORY
https://github.com/magento/magento2
Magento/community edition Security Information SECURITY
https://helpx.adobe.com/security/products/magento/apsb20-22.html

Frequently Asked Questions

What is CVE-2020-9585?
CVE-2020-9585 is a security vulnerability in Magento/community edition involving Magento Defense-in-depth security mitigation vulnerability under General Security Weakness.
Which Magento/community edition versions are affected?
Affected versions include releases prior to 2.3.4-p2, 1.9.4.5 across affected packages: magento/community-edition, magento/core, magento/project-community-edition.
What version fixes CVE-2020-9585?
Upgrading to 2.3.4-p2, 1.9.4.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is magento/community-edition affected?
Yes, magento/community-edition is affected in releases prior to Latest secure release, 2.3.4-p2. Upgrade your dependency to Latest secure release, 2.3.4-p2 or later.
Is magento/core affected?
Yes, magento/core is affected in releases prior to 1.9.4.5. Upgrade your dependency to 1.9.4.5 or later.
What is the CVSS score of CVE-2020-9585?
CVE-2020-9585 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2020-9585?
CVE-2020-9585 is classified under General Security Weakness.
How can I check Packagist dependencies for CVE-2020-9585?
Run the dependency tree command: 'inspect dependencies for magento/community-edition'. 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-55gv-hfg3-hwjq",
  "modified" : "2025-02-10T20:33:14Z",
  "published" : "2022-05-24T17:21:49Z",
  "aliases" : [ "CVE-2020-9585" ],
  "summary" : "Magento Defense-in-depth security mitigation vulnerability",
  "details" : "Magento versions 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 and earlier have a defense-in-depth security mitigation vulnerability. Successful exploitation could lead to arbitrary code execution.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "magento/community-edition"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.2.11"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "magento/community-edition"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.3.0"
      }, {
        "fixed" : "2.3.4-p2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "magento/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.9.4.5"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "magento/project-community-edition"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.0.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-9585"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/magento/magento2"
  }, {
    "type" : "WEB",
    "url" : "https://helpx.adobe.com/security/products/magento/apsb20-22.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-01-11T16:02:12Z",
    "nvd_published_at" : "2020-06-26T21:15:00Z"
  }
}