CVE-2021-21656: XML External Entity (XXE) Attacks in Jenkins Xcode Integration Plugin
Summary
CVE-2021-21656: XML external entity (XXE) attacks in Jenkins Xcode integration Plugin. Affects org.jenkins-ci.plugins:xcode-plugin versions < 2.0.15. Fixed in 2.0.15. How to fix ↓
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Background
The Jenkins Xcode Integration Plugin is a Maven package that provides integration between Jenkins and Xcode, allowing developers to build, test, and deploy iOS applications. It enables seamless automation of Xcode projects within Jenkins pipelines. However, versions 2.0.14 and earlier of the plugin are vulnerable to XML external entity (XXE) attacks.
Vulnerability Detail
The vulnerability in the Jenkins Xcode Integration Plugin arises from the lack of proper configuration of its XML parser, which leaves it susceptible to XML external entity (XXE) attacks. An attacker can exploit this vulnerability by submitting specially crafted XML input, which may lead to the disclosure of sensitive information, denial of service, or server-side request forgery (SSRF) attacks. The severity of this vulnerability is rated as HIGH with a CVSS score of 7.1.
How To Fix
Minimum fixed version
2.0.15
This is the first release that contains the fix.
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Workaround
There is no known workaround for this vulnerability. It is essential to update the Jenkins Xcode Integration Plugin to the fixed version to mitigate the risk of XML external entity (XXE) attacks.
Conclusion
The Jenkins Xcode Integration Plugin versions 2.0.14 and earlier are vulnerable to XML external entity (XXE) attacks. To ensure the security of the integration between Jenkins and Xcode, it is crucial to update the plugin to version 2.0.15 or later. This update includes the necessary configuration changes to prevent XXE attacks. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The Jenkins Xcode Integration Plugin is a Maven package that enables the integration of Xcode projects with Jenkins, allowing developers to automate the build, test, and deployment processes of iOS applications.
An XML external entity (XXE) attack is a type of vulnerability that allows an attacker to exploit weakly configured XML parsers by injecting malicious XML input. This can lead to the disclosure of sensitive information, denial of service, or server-side request forgery (SSRF) attacks.
This vulnerability could result in the disclosure of sensitive information, such as files on the server, or enable denial of service attacks that could disrupt the availability of the Jenkins Xcode Integration Plugin. Additionally, it may facilitate server-side request forgery (SSRF) attacks, allowing an attacker to make requests to internal resources.
The severity of this vulnerability is rated as HIGH with a CVSS score of 7.1. It is crucial to address this vulnerability promptly to mitigate the risk of exploitation.
You can use the Vulert 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, without requiring access to the code or installation.
