GHSA-rmwh-g367-mj4x

Опубликовано: 30 июн. 2025

Источник: github

Github: Прошло ревью

CVSS3: 4.5

Описание

File Browser allows sensitive data to be transferred in URL

Summary

URLs that are accessed by a user are commonly logged in many locations, both server- and client-side. It is thus good practice to never transmit any secret information as part of a URL. The Filebrowser violates this practice, since access tokens are used as GET parameters.

Impact

The JSON Web Token (JWT) which is used as a session identifier will get leaked to anyone having access to the URLs accessed by the user. This will give the attacker full access to the user's account and, in consequence, to all sensitive files the user has access to.

Description

Sensitive information in URLs is logged by several components (see the following examples), even if access is protected by TLS.

The browser history
The access logs on the affected web server
Proxy servers or reverse proxy servers
Third-party servers via the HTTP referrer header

In case attackers can access certain logs, they could read the included sensitive data.

Proof of Concept

When a file is downloaded via the web interface, the JWT is part of the URL:

GET /api/raw/testdir/testfile.txt?auth=eyJh[...]_r4EQ HTTP/1.1 Host: filebrowser.local:8080 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:128.0) Gecko/20100101 Firefox/128.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate, br Connection: keep-alive Referer: http://filebrowser.local:8080/files/testdir/ Cookie: auth=eyJh[...]_r4EQ Upgrade-Insecure-Requests: 1 Priority: u=0, i

This also happens when a new command session is started:

GET /api/command/?auth=eyJh[...]YW8BA HTTP/1.1 Host: filebrowser.local:8080 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:128.0) Gecko/20100101 Firefox/128.0 Accept: */* Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate, br Sec-WebSocket-Version: 13 Origin: http://filebrowser.local:8080 Sec-WebSocket-Key: oqQMrF7R34D3lAkj1+ZHTw== Connection: keep-alive, Upgrade Cookie: auth=eyJh[...]YW8BA Pragma: no-cache Cache-Control: no-cache Upgrade: websocket

Recommended Countermeasures

Sensitive data like session tokens or user credentials should be transmitted via HTTP headers or the HTTP body only, never in the URL.

Timeline

2025-03-27 Identified the vulnerability in version 2.32.0
2025-04-11 Contacted the project
2025-04-29 Vulnerability disclosed to the project
2025-06-25 Uploaded advisories to the project's GitHub repository
2025-06-26 CVE ID assigned by GitHub
2025-06-26 Fix released in version 2.33.9

References

Credits

Mathias Tausig (SBA Research)

Ссылки

Пакеты

Наименование

github.com/filebrowser/filebrowser/v2

Затронутые версииВерсия исправления

< 2.33.9

2.33.9

Наименование

github.com/filebrowser/filebrowser

Затронутые версииВерсия исправления

<= 1.11.0

Отсутствует

EPSS

Процентиль: 18%

0.00058

Низкий

4.5 Medium

CVSS3

CVE ID

CVE-2025-52901

Дефекты

CWE-598

Связанные уязвимости

CVE-2025-52901

CVSS3: 4.5

nvd

7 месяцев назад

File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename and edit files. Prior to version 2.33.9, access tokens are used as GET parameters. The JSON Web Token (JWT) which is used as a session identifier will get leaked to anyone having access to the URLs accessed by the user. This will give an attacker full access to a user's account and, in consequence, to all sensitive files the user has access to. This issue has been patched in version 2.33.9.

BDU:2025-10678

CVSS3: 4.5

fstec

11 месяцев назад

Уязвимость веб-менеджера для управления файлами и каталогами File Browser, связанная с раскрытием информации посредством строки запросов, позволяющая нарушителю получить несанкционированный доступ к учетной записи пользователя

EPSS

Процентиль: 18%

0.00058

Низкий

4.5 Medium

CVSS3

CVE ID

CVE-2025-52901

Дефекты

CWE-598