CVE-2019-12205 Silverstripe Flash Clipboard Reflected XSS
An attacker can execute arbitrary scripts in a victim's browser via reflected XSS in SilverStripe, potentially leading to session hijacking or data theft.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2019-12205?
CVE-2019-12205 is a medium-severity cross-site scripting vulnerability in Silverstripe Silverstripe, published on 25 Sep 2019. 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
SilverStripe through 4.3.3 has Flash Clipboard Reflected XSS.
Weakness: CWE-79
Which versions are affected by CVE-2019-12205?
6 open source packages ship an affected version, including silverstripe/framework and silverstripe/admin. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
silverstripe/framework Packagist | From 3.0.0 | 4.3.5 |
silverstripe/framework Packagist | From 3.0.0 | 4.3.5 |
silverstripe/framework Packagist | From 4.4.0-rc1 | 4.4.4 |
silverstripe/framework Packagist | From 4.4.0-rc1 | 4.4.4 |
silverstripe/admin Packagist | All versions | 1.3.5 |
silverstripe/admin Packagist | All versions | 1.3.5 |
Products include Silverstripe Silverstripe.
How do I fix CVE-2019-12205?
Upgrade silverstripe/framework to a fixed version for your release line: 4.3.5 or 4.4.4.
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-2019-12205 being exploited?
There is no known exploitation of CVE-2019-12205 in the wild and no public exploit code.
Other vulnerabilities in Silverstripe Silverstripe
Sources
Also known as GHSA-rfvw-5848-gxc5.