Apache NiFi up to 1.9.3 XMLFileLookupService XML File xml external entity reference

Summaryinfo

A vulnerability classified as critical was found in Apache NiFi up to 1.9.3. Impacted is an unknown function of the component XMLFileLookupService. Such manipulation as part of XML File leads to xml external entity reference. This vulnerability is traded as CVE-2019-10080. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Apache NiFi up to 1.9.3. Affected by this issue is an unknown function of the component XMLFileLookupService. The manipulation as part of a XML File 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:

The XMLFileLookupService in NiFi versions 1.3.0 to 1.9.2 allowed trusted users to inadvertently configure a potentially malicious XML file. The XML file has the ability to make external calls to services (via XXE) and reveal information such as the versions of Java, Jersey, and Apache that the NiFI instance uses.

The weakness was shared 11/19/2019 (Website). The advisory is shared for download at nifi.apache.org. This vulnerability is handled as CVE-2019-10080 since 03/26/2019. The exploitation is known to be easy. The attack may be launched remotely. The successful exploitation requires a simple authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 11/20/2019).

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

The entries VDB-145967 and VDB-145965 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Apache

Name

• NiFi

Version

• 1.9.0
• 1.9.1
• 1.9.2
• 1.9.3

License

• open-source

Website

• Vendor: https://www.apache.org/

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Once again VulDB remains the best source for vulnerability data.

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