// For flags

CVE-2020-7695

HTTP Response Splitting

Severity Score

5.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Uvicorn before 0.11.7 is vulnerable to HTTP response splitting. CRLF sequences are not escaped in the value of HTTP headers. Attackers can exploit this to add arbitrary headers to HTTP responses, or even return an arbitrary response body, whenever crafted input is used to construct HTTP headers.

Uvicornio versiones anteriores a 0.11.7 es vulnerable a la división de la respuesta HTTP.Las secuencias CRLF no escapaban en el valor de los encabezados HTTP. Los atacantes pueden explotar esto para agregar encabezados arbitrarios en las respuestas HTTP, o inclusive devolver un cuerpo de respuesta arbitrario, siempre que es usada una entrada diseñada para construir encabezados HTTP

*Credits: Everardo Padilla Saca
CVSS Scores
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
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
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-01-21 CVE Reserved
  • 2020-07-27 CVE Published
  • 2023-05-08 EPSS Updated
  • 2024-09-17 CVE Updated
  • 2024-09-17 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CAPEC
References (2)
URL Tag Source
https://github.com/encode/uvicorn Third Party Advisory
URL Date SRC
https://snyk.io/vuln/SNYK-PYTHON-UVICORN-570471 2024-09-17
URL Date SRC
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Encode
Search vendor "Encode"
 Uvicorn
Search vendor "Encode" for product "Uvicorn"
 < 0.11.7
Search vendor "Encode" for product "Uvicorn" and version " < 0.11.7"
-
Affected