CVE-2015-8031: Hudson XML API External Entity Injection Vulnerability in org.jvnet.hudson.main:hudson-core
Summary
CVE-2015-8031: Hudson XML API susceptible to External Entity Injection Vunerability prior to v3.3.2. Affects org.jvnet.hudson.main:hudson-core versions < 3.3.2. Fixed in 3.3.2. How to fix ↓
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Background
org.jvnet.hudson.main:hudson-core is a Maven package that provides the core functionality for the Hudson continuous integration server. Hudson allows users to automate the building, testing, and deployment of software projects. It includes an XML API that processes XML data for various operations. However, versions prior to 3.3.2 of Hudson are vulnerable to an External Entity Injection (XXE) attack.
Vulnerability Detail
The vulnerability in Hudson's XML API processing allows an attacker to inject external entities into XML data, leading to potential disclosure of sensitive information on the filesystem of the Hudson master server. By crafting malicious XML payloads, an attacker can exploit this vulnerability to read arbitrary files on the server, including configuration files, source code, and other sensitive data. This can result in unauthorized access, data leakage, and potential compromise of the entire Hudson server.
How To Fix
Minimum fixed version
3.3.2
This is the first release that contains the fix.
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Workaround
As a temporary workaround, you can disable the XML API in Hudson if it is not required for your specific use case. This can be achieved by modifying the Hudson configuration to remove or comment out the XML API endpoint configuration. However, this workaround may limit certain functionalities that rely on the XML API.
Conclusion
The Hudson XML API in org.jvnet.hudson.main:hudson-core prior to version 3.3.2 is vulnerable to External Entity Injection, which can lead to unauthorized access and potential disclosure of sensitive information. It is crucial to upgrade to the latest secure version and apply access restrictions to mitigate the risk. For additional support, contact DevNack.com.
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FAQ
This vulnerability allows an attacker to read arbitrary files on the Hudson master server, potentially exposing sensitive information and compromising the entire server.
You can use Vulert's playground (https://vulert.com/scanner) to check if your application is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities using just the pom.xml file.
While specific exploits for this vulnerability may not be publicly available, the XXE attack vector is well-known and widely used. It is important to address this vulnerability promptly to prevent potential exploitation.
Upgrading to the fixed version is the recommended approach to mitigate this vulnerability. However, if upgrading is not feasible in the short term, you can apply access restrictions to sensitive files and directories on the Hudson master server to minimize the impact of potential information disclosure.
For further support and assistance in remediating this vulnerability, you can reach out to info@devnack.com. Our team will be happy to help you address any concerns or questions you may have.
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