// For flags

CVE-2023-47627

Request smuggling in aiohttp

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. The HTTP parser in AIOHTTP has numerous problems with header parsing, which could lead to request smuggling. This parser is only used when AIOHTTP_NO_EXTENSIONS is enabled (or not using a prebuilt wheel). These bugs have been addressed in commit `d5c12ba89` which has been included in release version 3.8.6. Users are advised to upgrade. There are no known workarounds for these issues.

aiohttp es un framework cliente/servidor HTTP asíncrono para asyncio y Python. El analizador HTTP en AIOHTTP tiene numerosos problemas con el análisis de encabezados, lo que podría provocar contrabando de solicitudes. Este analizador solo se usa cuando AIOHTTP_NO_EXTENSIONS está habilitado (o no se usa una rueda prediseñada). Estos errores se solucionaron en el commit`d5c12ba89` que se incluyó en la versión 3.8.6. Se recomienda a los usuarios que actualicen. No se conocen workarounds para estos problemas.

An HTTP request smuggling vulnerability was found in aiohttp. Numerous issues with HTTP parsing can allow an attacker to smuggle HTTP requests.

Ben Kallus discovered that AIOHTTP did not correctly parse HTTP headers. A remote attacker could possibly use this issue to perform request smuggling. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. Ivan Novikov discovered that AIOHTTP did not properly validate certain inputs. A remote attacker could possibly use this issue to perform request smuggling. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.

*Credits: N/A
CVSS Scores
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
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Complete
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
Poc
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2023-11-07 CVE Reserved
  • 2023-11-14 CVE Published
  • 2025-02-13 CVE Updated
  • 2025-02-13 First Exploit
  • 2025-08-08 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Aiohttp
Search vendor "Aiohttp"
 Aiohttp
Search vendor "Aiohttp" for product "Aiohttp"
 < 3.8.6
Search vendor "Aiohttp" for product "Aiohttp" and version " < 3.8.6"
-
Affected