CVE-2021-41042 XML External Entity Reference in Eclipse Lyo
An attacker can trigger external DTD retrieval in Eclipse Lyo, potentially leading to data disclosure or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-41042?
CVE-2021-41042 is a medium-severity vulnerability in The Eclipse Foundation Eclipse Lyo, published on 7 Jul 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In Eclipse Lyo versions 1.0.0 to 4.1.0, a TransformerFactory is initialized with the defaults that do not restrict DTD loading when working with RDF/XML. This allows an attacker to cause an external DTD to be retrieved.
Weakness: CWE-611
Which versions are affected by CVE-2021-41042?
2 open source packages ship an affected version, including org.eclipse.lyo:lyo-parent. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.eclipse.lyo:lyo-parent Maven | From 1.0.0 | 5.0.0.Final |
org.eclipse.lyo:lyo-parent Maven | From 1.0.0 | 5.0.0.Final |
Products include Eclipse Lyo.
How do I fix CVE-2021-41042?
Upgrade org.eclipse.lyo:lyo-parent to 5.0.0.Final or later.
Is CVE-2021-41042 being exploited?
There is no known exploitation of CVE-2021-41042 in the wild and no public exploit code.
Sources
Also known as GHSA-6296-mvgp-27hp.