CVE-2025-27142

LocalSend is a free, open-source app that allows users to securely share files and messages with nearby devices over their local network without needing an internet connection. Prior to version 1.17.0, due to the missing sanitization of the path in the `POST /api/localsend/v2/prepare-upload` and the `POST /api/localsend/v2/upload` endpoint, a malicious file transfer request can write files to the arbitrary location on the system, resulting in the remote command execution. A malicious file transfer request sent by nearby devices can write files into an arbitrary directory. This usually allows command execution via the startup folder on Windows or Bash-related files on Linux. If the user enables the `Quick Save` feature, it will silently write files without explicit user interaction. Version 1.17.0 fixes this issue.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/localsend/localsend/commit/e8635204ec782ded45bc7d698deb60f3c4105687	Patch
https://github.com/localsend/localsend/security/advisories/GHSA-f7jp-p6j4-3522	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:localsend:localsend:*:*:*:*:*:*:*:*

History

28 Feb 2025, 13:35

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 8.8
First Time		Localsend localsend Localsend
CPE		cpe:2.3:a:localsend:localsend::::::::
Summary		(es) LocalSend es una aplicación gratuita de código abierto que permite a los usuarios compartir archivos y mensajes de forma segura con dispositivos cercanos a través de su red local sin necesidad de una conexión a Internet. Antes de la versión 1.17.0, debido a la falta de depuración de la ruta en el endpoint `POST /api/localsend/v2/prepare-upload` y `POST /api/localsend/v2/upload`, una solicitud de transferencia de archivos maliciosa puede escribir archivos en una ubicación arbitraria en el sistema, lo que da como resultado la ejecución remota del comando. Una solicitud de transferencia de archivos maliciosa enviada por dispositivos cercanos puede escribir archivos en un directorio arbitrario. Esto generalmente permite la ejecución de comandos a través de la carpeta de inicio en Windows o archivos relacionados con Bash en Linux. Si el usuario habilita la función `Guardado rápido`, escribirá archivos de forma silenciosa sin interacción explícita del usuario. La versión 1.17.0 corrige este problema.
References	~~() https://github.com/localsend/localsend/commit/e8635204ec782ded45bc7d698deb60f3c4105687 -~~	() https://github.com/localsend/localsend/commit/e8635204ec782ded45bc7d698deb60f3c4105687 - Patch
References	~~() https://github.com/localsend/localsend/security/advisories/GHSA-f7jp-p6j4-3522 -~~	() https://github.com/localsend/localsend/security/advisories/GHSA-f7jp-p6j4-3522 - Vendor Advisory

25 Feb 2025, 20:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-02-25 20:15

Updated : 2025-02-28 13:35

NVD link : CVE-2025-27142

Mitre link : CVE-2025-27142

CVE.ORG link : CVE-2025-27142

JSON object : View

Products Affected

localsend

localsend

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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8.8 /10