CVE-2020-9280 SilverStripe Folders migrated from 3.x may be unsafe to upload to

What is CVE-2020-9280?

CVE-2020-9280 is a high-severity vulnerability in Silverstripe Silverstripe, published on 15 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In SilverStripe through 4.5, files uploaded via Forms to folders migrated from Silverstripe CMS 3.x may be put to the default "/Uploads" folder instead. This affects installations which allowed upload folder protection via the optional silverstripe/secureassets module under 3.x. This module is installed and enabled by default on the Common Web Platform (CWP). The vulnerability only affects files uploaded after an upgrade to 4.x.

Weakness: CWE-434

Which versions are affected by CVE-2020-9280?

9 open source packages ship an affected version, including silverstripe/assets, silverstripe and silverstripe/framework. It affects 1 product.

Products include Silverstripe Silverstripe.

How do I fix CVE-2020-9280?

Upgrade silverstripe/assets to a fixed version for your release line: 1.4.7 or 1.5.2.

Is CVE-2020-9280 being exploited?

There is no known exploitation of CVE-2020-9280 in the wild and no public exploit code.

Other vulnerabilities in Silverstripe Silverstripe

• CVE-2007-2321 Other in n/a Critical 10.0
• CVE-2019-12204 Missing warning can lead to unauthenticated admin access in SilverStripe Critical 9.8
• CVE-2019-5715 Silverstripe Framework SQLi Vulnerability Critical 9.8
• CVE-2019-12437 Silverstripe CSRF Protection Bypass via GraphQL High 8.8
• CVE-2020-6164 Silverstripe CMS information disclosure High 7.5

All Silverstripe Silverstripe vulnerabilities

Sources

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

Also known as BIT-silverstripe-2020-9280, GHSA-592m-4533-rxq9.