// For flags

CVE-2024-1968

Authorization Header Leakage in scrapy/scrapy on Scheme Change Redirects

Severity Score

7.5
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

In scrapy/scrapy, an issue was identified where the Authorization header is not removed during redirects that only change the scheme (e.g., HTTPS to HTTP) but remain within the same domain. This behavior contravenes the Fetch standard, which mandates the removal of Authorization headers in cross-origin requests when the scheme, host, or port changes. Consequently, when a redirect downgrades from HTTPS to HTTP, the Authorization header may be inadvertently exposed in plaintext, leading to potential sensitive information disclosure to unauthorized actors. The flaw is located in the _build_redirect_request function of the redirect middleware.

En scrapy/scrapy, se identificó un problema por el cual el encabezado Authorization no se elimina durante las redirecciones que solo cambian el esquema (por ejemplo, HTTPS a HTTP) pero permanecen dentro del mismo dominio. Este comportamiento contraviene el estándar Fetch, que exige la eliminación de encabezados de Autorización en solicitudes de origen cruzado cuando cambia el esquema, el host o el puerto. En consecuencia, cuando una redirección degrada de HTTPS a HTTP, el encabezado de Autorización puede quedar expuesto inadvertidamente en texto sin formato, lo que lleva a una posible divulgación de información confidencial a actores no autorizados. La falla se encuentra en la función _build_redirect_request del middleware de redirección.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
High
Authentication
None
Confidentiality
Complete
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
Poc
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-02-28 CVE Reserved
  • 2024-05-20 CVE Published
  • 2024-08-01 CVE Updated
  • 2025-04-15 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Scrapy
Search vendor "Scrapy"
 Scrapy
Search vendor "Scrapy" for product "Scrapy"
*-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
*-
Affected