org.eclipse.jetty:jetty-xml@10.0.9 vulnerabilities

Affected versions of this package are vulnerable to XML External Entity (XXE) Injection via the XmlParser when parsing Jetty’s XML configuration files by importing a (remote) malicious WAR into Jetty’s server. Exploiting this vulnerability is possible when the WAR includes a malicious web.xml.

Note:

There are no circumstances in a normally deployed Jetty server where potentially hostile XML is given to the XmlParser class without the attacker already having arbitrary access to the server. I.e., in order to exploit XmlParser, the attacker would already have the ability to deploy and execute hostile code. Specifically, Jetty has no protection against a malicious web application, and potentially hostile web applications should only be run on isolated virtualization.

Thus this is not considered a vulnerability of the Jetty server itself, as any such usage of the Jetty XmlParser is equally vulnerable as direct usage of the JVM-supplied SAX parser. No CVE will be allocated to this advisory.

However, any direct usage of the XmlParser class by an application may be vulnerable. The impact would greatly depend on how the application uses XmlParser, but it could be a denial of service due to large entity expansion or possibly the revealing of local files if the XML results are accessible remotely.

Upgrade org.eclipse.jetty:jetty-xml to version 9.4.52.v20230823, 10.0.16, 11.0.16, 12.0.0 or higher.