// For flags

CVE-2024-1135

HTTP Request Smuggling in benoitc/gunicorn

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

Gunicorn fails to properly validate Transfer-Encoding headers, leading to HTTP Request Smuggling (HRS) vulnerabilities. By crafting requests with conflicting Transfer-Encoding headers, attackers can bypass security restrictions and access restricted endpoints. This issue is due to Gunicorn's handling of Transfer-Encoding headers, where it incorrectly processes requests with multiple, conflicting Transfer-Encoding headers, treating them as chunked regardless of the final encoding specified. This vulnerability allows for a range of attacks including cache poisoning, session manipulation, and data exposure.

Gunicorn no puede validar correctamente los encabezados Transfer-Encoding, lo que genera vulnerabilidades de contrabando de solicitudes HTTP (HRS). Al manipular solicitudes con encabezados Transfer-Encoding conflictivos, los atacantes pueden eludir las restricciones de seguridad y acceder a endpoints restringidos. Este problema se debe al manejo que hace Gunicorn de los encabezados Transfer-Encoding, donde procesa incorrectamente solicitudes con múltiples encabezados Transfer-Encoding conflictivos, tratándolos como fragmentados independientemente de la codificación final especificada. Esta vulnerabilidad permite una variedad de ataques que incluyen envenenamiento de caché, manipulación de sesiones y exposición de datos.

An HTTP Request Smuggling vulnerability was found in Gunicorn. By crafting requests with conflicting Transfer-Encoding headers, attackers can bypass security restrictions and access restricted endpoints. This issue is due to Gunicorn's handling of Transfer-Encoding headers, where it incorrectly processes requests with multiple, conflicting Transfer-Encoding headers, treating them as chunked regardless of the final encoding specified. This vulnerability allows for a range of attacks, including cache poisoning, session manipulation, and data exposure.

*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
Authentication
None
Confidentiality
Partial
Integrity
Complete
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2024-01-31 CVE Reserved
  • 2024-04-16 CVE Published
  • 2024-04-16 EPSS Updated
  • 2024-12-20 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
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
Benoitc
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Gunicorn
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Affected
Redhat
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Ansible Automation Platform
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*-
Affected
Redhat
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Openstack
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Affected
Redhat
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Satellite
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Affected
Redhat
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Satellite Capsule
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Affected
Debian
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Debian Linux
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Affected
Opensuse
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Leap
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Affected
Redhat
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Enterprise Linux
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Affected
Suse
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Ses
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Affected
Suse
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Sle-module-public-cloud
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Affected
Suse
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Sle-module-python3
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Affected
Suse
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Sle Hpc-espos
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Affected
Suse
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Sle Hpc-ltss
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Affected
Suse
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Sle Hpc
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Affected
Suse
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Sled
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Affected
Suse
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Sles-ltss
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Affected
Suse
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Sles
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Suse
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Sles Sap
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Affected
Suse
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Suse-manager-proxy
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Affected
Suse
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Suse-manager-retail-branch-server
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Affected
Suse
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Suse-manager-server
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Affected