CVE-2021-36043 Magento Commerce Authenticated Blind SSRF Could Lead To Remote Code Execution

High 8.0 Published Updated

Admins can exploit blind SSRF in dotmailer extension to achieve remote code execution if Redis is enabled.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2021-36043?

CVE-2021-36043 is a high-severity server-side request forgery vulnerability in Adobe Magento Commerce, published on 1 Sep 2021. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Magento Commerce versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by a blind SSRF vulnerability in the bundled dotmailer extension. An attacker with admin privileges could abuse this to achieve remote code execution should Redis be enabled.

Weakness: CWE-918

Which versions are affected by CVE-2021-36043?

8 open source packages ship an affected version, including magento/community-edition and magento/project-community-edition. It affects 2 products.

PackageAffectedFixed in
magento/community-edition PackagistAll versionsNone
magento/community-edition PackagistAll versionsNone
magento/community-edition PackagistAll versions2.3.7-p1
magento/community-edition PackagistAll versions2.3.7-p1
magento/community-edition PackagistFrom 2.4.2-p12.4.2-p2
magento/community-edition PackagistFrom 2.4.2-p12.4.2-p2
2 more packages
magento/project-community-edition PackagistAll versions to 2.0.2None
magento/project-community-edition PackagistAll versions to 2.0.2None

Products include Adobe Adobe Commerce, Adobe Magento Open Source.

How do I fix CVE-2021-36043?

Upgrade magento/community-edition to a fixed version for your release line: 2.3.7-p1 or 2.4.2-p2.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2021-36043 being exploited?

There is no known exploitation of CVE-2021-36043 in the wild and no public exploit code.

Sources

Also known as GHSA-36xq-7w8w-xp68.

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