CVE-2021-21014 Magento Commerce Arbitrary Folder Empty Could Lead To Arbitrary Code Execution

What is CVE-2021-21014?

CVE-2021-21014 is a critical vulnerability in Magento Magento, published on 11 Feb 2021. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier) and 2.3.6 (and earlier) are vulnerable to a file upload restriction bypass. Successful exploitation could lead to arbitrary code execution by an authenticated attacker. Access to the admin console is required for successful exploitation.

Weakness: CWE-434

Which versions are affected by CVE-2021-21014?

7 open source packages ship an affected version, including magento/community-edition, magento and magento/project-community-edition. It affects 1 product.

Products include Magento Magento.

How do I fix CVE-2021-21014?

Upgrade magento/community-edition to a fixed version for your release line: 2.3.6-p1 or 2.4.2.

Is CVE-2021-21014 being exploited?

There is no known exploitation of CVE-2021-21014 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in Magento Magento

• CVE-2020-9664 Magento php object injection vulnerability Critical 9.8
• CVE-2020-9576 Magento command injection vulnerability Critical 9.8
• CVE-2020-9578 Magento command injection vulnerability Critical 9.8
• CVE-2020-9579 Magento Security mitigation bypass vulnerability Critical 9.8
• CVE-2020-9580 Magento Security mitigation bypass vulnerability Critical 9.8

All Magento Magento vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-magento-2021-21014, GHSA-269w-pqc7-68q9.