Eclipse Jetty Server 9.x Error Path information disclosure

Summaryinfo

A vulnerability labeled as problematic has been found in Eclipse Jetty Server 9.x. This affects an unknown function of the component Error Handler. The manipulation results in information disclosure (Path). This vulnerability was named CVE-2018-12536. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Eclipse Jetty Server 9.x. Affected is an unknown part of the component Error Handler. The manipulation with an unknown input leads to a information disclosure vulnerability (Path). CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

In Eclipse Jetty Server, all 9.x versions, on webapps deployed using default Error Handling, when an intentionally bad query arrives that doesn't match a dynamic url-pattern, and is eventually handled by the DefaultServlet's static file serving, the bad characters can trigger a java.nio.file.InvalidPathException which includes the full path to the base resource directory that the DefaultServlet and/or webapp is using. If this InvalidPathException is then handled by the default Error Handler, the InvalidPathException message is included in the error response, revealing the full server path to the requesting system.

The bug was discovered 06/25/2018. The weakness was presented 06/27/2018 (Website). The advisory is available at bugs.eclipse.org. This vulnerability is traded as CVE-2018-12536 since 06/18/2018. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 111048 (Fedora 27 : jetty (2018-93a507fd0f)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 13181 (Eclipse Jetty Multiple Vulnerabilities).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (111048). See VDB-119806, VDB-119873, VDB-119874 and VDB-119875 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Eclipse

Name

• Jetty Server

Version

• 9.x

License

• open-source

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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