Magento up to 2.3.6/2.4.0-p1/2.4.1 Login as Customer Module access control

entryeditHistoryDiffjsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.6	$0-$5k	0.00

A vulnerability classified as critical has been found in Magento up to 2.3.6/2.4.0-p1/2.4.1. Affected is some unknown processing of the component Login as Customer Module. The manipulation with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-284. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier) and 2.3.6 (and earlier) are vulnerable to an access control bypass vulnerability in the Login as Customer module. Successful exploitation could lead to unauthorized access to restricted resources.

The weakness was disclosed 02/12/2021. The advisory is shared for download at helpx.adobe.com. This vulnerability is traded as CVE-2021-21020 since 12/18/2020. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/28/2021). The MITRE ATT&CK project declares the attack technique as T1068.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Productinfoedit

Name

Magento

CPE 2.3infoedit

CPE 2.2infoedit

CVSSv3infoedit

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.6
VulDB Temp Score: 5.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

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Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-284
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Today	unlock	unlock	unlock	unlock

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Countermeasuresinfoedit

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfoedit

12/18/2020 CVE assigned
02/12/2021 +56 days Advisory disclosed
02/12/2021 +0 days VulDB entry created
02/28/2021 +16 days VulDB last update

Sourcesinfoedit

Advisory: helpx.adobe.com
Status: Not defined

CVE: CVE-2021-21020 (🔒)

Entryinfoedit

Created: 02/12/2021 11:37 AM
Updated: 02/28/2021 02:37 PM
Changes: (8) vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai source_cve_cna vulnerability_cvss2_nvd_basescore
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