CVE-2021-20717 EC-CUBE Cross-site scripting vulnerability
Remote attackers can inject scripts into EC-CUBE input fields, leading to arbitrary script execution in administrators' browsers.
- 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
- None listed
What is CVE-2021-20717?
CVE-2021-20717 is a medium-severity cross-site scripting vulnerability in EC-CUBE, published on 10 May 2021. 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
Cross-site scripting vulnerability in EC-CUBE 4.0.0 to 4.0.5 allows a remote attacker to inject a specially crafted script in the specific input field of the EC web site which is created using EC-CUBE. As a result, it may lead to an arbitrary script execution on the administrator's web browser.
Weakness: CWE-79
Which versions are affected by CVE-2021-20717?
2 open source packages ship an affected version, including ec-cube/ec-cube. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
ec-cube/ec-cube Packagist | From 4.0.0 to 4.0.5 | None |
ec-cube/ec-cube Packagist | From 4.0.0 to 4.0.5 | None |
Products include Ec-Cube Ec-Cube.
How do I fix CVE-2021-20717?
No fix has been published for CVE-2021-20717 yet. Limit exposure of the affected software until one is available.
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-2021-20717 being exploited?
There is no known exploitation of CVE-2021-20717 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in EC-CUBE
Sources
Also known as GHSA-c8mx-43cq-993w.