CVE-2024-23452

Apache bRPC: HTTP request smuggling vulnerability

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

Request smuggling vulnerability in HTTP server in Apache bRPC 0.9.5~1.7.0 on all platforms allows attacker to smuggle request. Vulnerability Cause Description： The http_parser does not comply with the RFC-7230 HTTP 1.1 specification. Attack scenario:
If a message is received with both a Transfer-Encoding and a Content-Length header field, such a message might indicate an attempt to perform request smuggling or response splitting.
One particular attack scenario is that a bRPC made http server on the backend receiving requests in one persistent connection from frontend server that uses TE to parse request with the logic that 'chunk' is contained in the TE field. in that case an attacker can smuggle a request into the connection to the backend server. Solution:
You can choose one solution from below:
1. Upgrade bRPC to version 1.8.0, which fixes this issue. Download link: https://github.com/apache/brpc/releases/tag/1.8.0 2. Apply this patch: https://github.com/apache/brpc/pull/2518

Vulnerabilidad de contrabando de solicitudes en el servidor HTTP en Apache bRPC 0.9.5~1.7.0 en todas las plataformas permite al atacante contrabandear solicitudes. Descripción de la causa de la vulnerabilidad: http_parser no cumple con la especificación RFC-7230 HTTP 1.1. Escenario de ataque: si se recibe un mensaje con un campo de encabezado Transfer-Encoding y Content-Length, dicho mensaje podría indicar un intento de realizar contrabando de solicitudes o división de respuestas. Un escenario de ataque particular es que un bRPC creó un servidor http en el backend que recibe solicitudes en una conexión persistente desde el servidor frontend que usa TE para analizar la solicitud con la lógica de que el "fragmento" está contenido en el campo TE. En ese caso, un atacante puede introducir de contrabando una solicitud en la conexión con el servidor backend. Solución: Puede elegir una de las siguientes soluciones: 1. Actualice bRPC a la versión 1.8.0, que soluciona este problema. Enlace de descarga: https://github.com/apache/brpc/releases/tag/1.8.0 2. Aplique este parche: https://github.com/apache/brpc/pull/2518

Request smuggling vulnerability in HTTP server in Apache bRPC 0.9.5~1.7.0 on all platforms allows attacker to smuggle request. Vulnerability Cause Description： The http_parser does not comply with the RFC-7230 HTTP 1.1 specification. Attack scenario: If a message is received with both a Transfer-Encoding and a Content-Length header field, such a message might indicate an attempt to perform request smuggling or response splitting. One particular attack scenario is that a bRPC made http server on the backend receiving requests in one persistent connection from frontend server that uses TE to parse request with the logic that 'chunk' is contained in the TE field. in that case an attacker can smuggle a request into the connection to the backend server. Solution: You can choose one solution from below: 1. Upgrade bRPC to version 1.8.0, which fixes this issue. Download link: https://github.com/apache/brpc/releases/tag/1.8.0 2. Apply this patch: https://github.com/apache/brpc/pull/2518

*Credits: Pingtao Wei of 2012 Laboratories, Ziyang Chen of 2012 Laboratories, Haoran Zhi of 2012 Laboratories, Hongpei Li of 2012 Laboratories

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Complete

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-01-17 CVE Reserved
2024-02-08 CVE Published
2025-02-13 CVE Updated
2025-02-14 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

CAPEC

References (4)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2024/02/08/1	Mailing List
https://github.com/apache/brpc/releases/tag/1.8.0	Release Notes

URL	Date	SRC

URL	Date	SRC
https://github.com/apache/brpc/pull/2518	2024-02-29

URL	Date	SRC
https://lists.apache.org/thread/kkvdpwyr2s2yt9qvvxfdzon012898vxd	2024-02-29

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apache Search vendor "Apache"		Brpc Search vendor "Apache" for product "Brpc"				>= 0.9.5 < 1.8.0 Search vendor "Apache" for product "Brpc" and version " >= 0.9.5 < 1.8.0"		-		Affected