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GHSA-w7f9-wqc4-3wxr

Опубликовано: 11 мар. 2025
Источник: github
Github: Прошло ревью
CVSS3: 7.5

Описание

Mockoon has a Path Traversal and LFI in the static file serving endpoint

Summary

A mock API configuration for static file serving following the same approach presented in the documentation page, where the server filename is generated via templating features from user input is vulnerable to Path Traversal and LFI, allowing an attacker to get any file in the mock server filesystem. The issue may be particularly relevant in cloud hosted server instances

Details

In sendFileWithCallback(code) and sendFile(code) the filePath variable is parsed using TemplateParser

let filePath = TemplateParser({ shouldOmitDataHelper: false, // replace backslashes with forward slashes, but not if followed by a dot (to allow helpers with paths containing properties with dots: e.g. {{queryParam 'path.prop\.with\.dots'}}) content: routeResponse.filePath.replace(/\\(?!\.)/g, '/'), environment: this.environment, processedDatabuckets: this.processedDatabuckets, globalVariables: this.globalVariables, request: serverRequest, envVarsPrefix: this.options.envVarsPrefix });

The path extracted from the request parameters used when composing the final file path is not sanitized and is vulnerable to path traversal exploits (e.g. ../../../../../etc/passwd)

PoC

Test setup

The issue has been tested with mockoon-cli, using the Docker image mockoon/cli:latest

config.json

# Folder setup mkdir mockoon-test cd mockoon-test # put config.json in mockooon-test dir mkdir static
# Run container docker run -d --mount type=bind,source=./config.json,target=/data,readonly -v ./static:/static -p 3000:3000 mockoon/cli:latest -d data -p 3000

Payload to reproduce

Browsing directly to http://localhost:3000/static/%2F..%2F..%2F..%2F..%2F..%2Fetc%2Fpasswd is going to display the /etc/passwd file in the container filesystem

Пакеты

Наименование

@mockoon/commons-server

npm
Затронутые версииВерсия исправления

<= 9.1.0

9.2.0

Наименование

@mockoon/cli

npm
Затронутые версииВерсия исправления

<= 9.1.0

9.2.0

EPSS

Процентиль: 84%
0.02206
Низкий

7.5 High

CVSS3

Дефекты

CWE-22
CWE-73

Связанные уязвимости

CVSS3: 7.5
nvd
5 месяцев назад

Mockoon provides way to design and run mock APIs. Prior to version 9.2.0, a mock API configuration for static file serving follows the same approach presented in the documentation page, where the server filename is generated via templating features from user input is vulnerable to Path Traversal and LFI, allowing an attacker to get any file in the mock server filesystem. The issue may be particularly relevant in cloud hosted server instances. Version 9.2.0 fixes the issue.

EPSS

Процентиль: 84%
0.02206
Низкий

7.5 High

CVSS3

Дефекты

CWE-22
CWE-73