Apache Karaf up to 4.1.6/4.2.1 Features Deployer XMLInputFactory xml external entity reference

Summaryinfo

A vulnerability was found in Apache Karaf up to 4.1.6/4.2.1. It has been rated as critical. This impacts the function XMLInputFactory of the component Features Deployer. Performing a manipulation results in xml external entity reference. This vulnerability is cataloged as CVE-2018-11788. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in Apache Karaf up to 4.1.6/4.2.1. This affects the function XMLInputFactory of the component Features Deployer. The manipulation with an unknown input leads to a xml external entity reference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Apache Karaf provides a features deployer, which allows users to "hot deploy" a features XML by dropping the file directly in the deploy folder. The features XML is parsed by XMLInputFactory class. Apache Karaf XMLInputFactory class doesn't contain any mitigation codes against XXE. This is a potential security risk as an user can inject external XML entities in Apache Karaf version prior to 4.1.7 or 4.2.2. It has been fixed in Apache Karaf 4.1.7 and 4.2.2 releases.

The bug was discovered 01/06/2019. The weakness was shared 01/07/2019 (Website). The advisory is shared at karaf.apache.org. This vulnerability is uniquely identified as CVE-2018-11788 since 06/05/2018. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version 4.1.7 or 4.2.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 106479†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• Apache

Name

• Karaf

Version

• 4.1.0
• 4.1.1
• 4.1.2
• 4.1.3
• 4.1.4
• 4.1.5
• 4.1.6
• 4.2.0
• 4.2.1

License

• open-source

Website

• Vendor: https://www.apache.org/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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