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org.freemarker:freemarker@2.3.28 vulnerabilities

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Direct Vulnerabilities

Known vulnerabilities in the org.freemarker:freemarker package. This does not include vulnerabilities belonging to this package’s dependencies.

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Vulnerability Vulnerable Version
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Server-side Template Injection (SSTI)

org.freemarker:freemarker is a "template engine"; a generic tool to generate text output (anything from HTML to auto generated source code) based on templates.

Affected versions of this package are vulnerable to Server-side Template Injection (SSTI). By allowing user input into java.security.ProtectionDomain.getClassLoader, templates will get access to the java classloader. This can be further leveraged for file system access and code execution. A low-privileged user is sufficient for exploitation of this vulnerability.

How to fix Server-side Template Injection (SSTI)?

Upgrade org.freemarker:freemarker to version 2.3.30 or higher.

[,2.3.30)
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