CVE-2021-28584 Magento Commerce path traversal vulnerability in child theme store creation

What is CVE-2021-28584?

CVE-2021-28584 is a medium-severity path traversal vulnerability in Magento Magento, published on 28 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Magento versions 2.4.2 (and earlier), 2.4.1-p1 (and earlier) and 2.3.6-p1 (and earlier) are affected by a Path Traversal vulnerability when creating a store with child theme.Successful exploitation could lead to arbitrary file system write by an authenticated attacker. Access to the admin console is required for successful exploitation.

Weakness: CWE-22

Which versions are affected by CVE-2021-28584?

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-2021-28584?

Upgrade magento/community-edition to a fixed version for your release line: 2.3.7 or 2.4.2-p1.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2021-28584 being exploited?

There is no known exploitation of CVE-2021-28584 in the wild and no public exploit code.

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Sources

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

Also known as BIT-magento-2021-28584, GHSA-7gpv-xrjr-f5h4.