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Magento CVE-2021-28583

MEDIUM
Violation of Secure Design Principles (CWE-657)
2021-06-28 psirt@adobe.com
Authentication Bypass Adobe Magento
4.2
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
CWE-657
Impact

CVSS score of 4.2 (MEDIUM). Attack characteristics: local attack vector, low complexity, high privileges required, user interaction required.
Exploit ScenarioDerived

Successful exploitation could compromise the medium-severity affected system.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 1.9% exploitation probability (EPSS)

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AnalysisAI

Magento versions 2.4.2 (and earlier), 2.4.1-p1 (and earlier) and 2.3.6-p1 (and earlier) are affected by a Violation of Secure Design Principles vulnerability in RMA PDF filename formats. Rated medium severity (CVSS 4.2), this vulnerability is low attack complexity.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affected Packages

composer magento/community-edition fix: 2.3.7, 2.4.2-p1
composer magento/project-community-edition no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 packages in composer

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Technical ContextAI · show details

This vulnerability is classified under CWE-657. Magento versions 2.4.2 (and earlier), 2.4.1-p1 (and earlier) and 2.3.6-p1 (and earlier) are affected by a Violation of Secure Design Principles vulnerability in RMA PDF filename formats. Successful exploitation could allow an attacker to get unauthorized access to restricted resources. Affected products include: Magento.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 4.2 MEDIUM
AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

DescriptionNVD

Magento versions 2.4.2 (and earlier), 2.4.1-p1 (and earlier) and 2.3.6-p1 (and earlier) are affected by a Violation of Secure Design Principles vulnerability in RMA PDF filename formats. Successful exploitation could allow an attacker to get unauthorized access to restricted resources.

Threat Intelligence Overview

EPSS Score
1.9%
Top 23% exploitable
Data Quality
2 sources
Confidence: Low
NVD CVE.org EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 1.9%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

23
Low Medium High Critical
KEV: 0
EPSS: +2
CVSS: +21
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)NVD

cpe:2.3:a:magento:magento:*:*:*:*:commerce:*:*:*
cpe:2.3:a:magento:magento:*:*:*:*:open_source:*:*:*
cpe:2.3:a:magento:magento:2.3.6:-:*:*:commerce:*:*:*
cpe:2.3:a:magento:magento:2.3.6:-:*:*:open_source:*:*:*
cpe:2.3:a:magento:magento:2.3.6:p1:*:*:commerce:*:*:*
cpe:2.3:a:magento:magento:2.3.6:p1:*:*:open_source:*:*:*
cpe:2.3:a:magento:magento:2.4.1:-:*:*:commerce:*:*:*
cpe:2.3:a:magento:magento:2.4.1:-:*:*:open_source:*:*:*
cpe:2.3:a:magento:magento:2.4.1:p1:*:*:commerce:*:*:*
cpe:2.3:a:magento:magento:2.4.1:p1:*:*:open_source:*:*:*
cpe:2.3:a:magento:magento:2.4.2:*:*:*:commerce:*:*:*
cpe:2.3:a:magento:magento:2.4.2:*:*:*:open_source:*:*:*

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Same weakness CWE-657 – Violation of Secure Design Principles

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Same technique Authentication Bypass

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References

Advisories & patches
PATCH https://helpx.adobe.com/security/products/magento/apsb21-30.html

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