CVE-2020-24408 Stored XSS in customer address upload feature

What is CVE-2020-24408?

CVE-2020-24408 is a medium-severity cross-site scripting vulnerability in Magento Magento, published on 16 Oct 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Magento versions 2.4.0 and 2.3.5p1 (and earlier) are affected by a persistent XSS vulnerability that allows users to upload malicious JavaScript via the file upload component. This vulnerability could be abused by an unauthenticated attacker to execute XSS attacks against other Magento users. This vulnerability requires a victim to browse to the uploaded file.

Weakness: CWE-79

Which versions are affected by CVE-2020-24408?

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

Products include Magento Magento.

How do I fix CVE-2020-24408?

Upgrade magento/community-edition to 2.4.1 or later.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2020-24408 being exploited?

There is no known exploitation of CVE-2020-24408 in the wild and no public exploit code.

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-2020-24408, GHSA-jxjc-6xmh-h7mg.