Apache Syncope up to 2.0.10/2.1.1 BPMN Definition xml external entity reference

Summaryinfo

A vulnerability described as critical has been identified in Apache Syncope up to 2.0.10/2.1.1. Affected is an unknown function of the component BPMN Definition Handler. Such manipulation leads to xml external entity reference. This vulnerability is listed as CVE-2018-17186. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Apache Syncope up to 2.0.10/2.1.1. Affected by this issue is an unknown code block of the component BPMN Definition Handler. The manipulation with an unknown input leads to a xml external entity reference vulnerability. Using CWE to declare the problem leads to CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An administrator with workflow definition entitlements can use DTD to perform malicious operations, including but not limited to file read, file write, and code execution.

The bug was discovered 11/06/2018. The weakness was presented 11/06/2018 (Website). The advisory is shared for download at syncope.apache.org. This vulnerability is handled as CVE-2018-17186 since 09/19/2018. The exploitation is known to be easy. The attack may be launched remotely. The requirement for exploitation is a simple authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/10/2020).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

See VDB-126487 for similar entry. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Apache

Name

• Syncope

Version

• 2.0.0
• 2.0.1
• 2.0.2
• 2.0.3
• 2.0.4
• 2.0.5
• 2.0.6
• 2.0.7
• 2.0.8
• 2.0.9
• 2.0.10
• 2.1.0
• 2.1.1

License

• open-source

Website

• Vendor: https://www.apache.org/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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