CVE-2024-1135 HTTP Request Smuggling in benoitc/gunicorn

2024-04-1600:00:14

CWE-444

@huntr_ai

www.cve.org

gunicorn

http smuggling

vulnerability

cve-2024-1135

transfer-encoding

security restrictions

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

7.7 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.1%

JSON

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.

CNA Affected

[
  {
    "vendor": "benoitc",
    "product": "benoitc/gunicorn",
    "versions": [
      {
        "version": "unspecified",
        "status": "affected",
        "versionType": "custom",
        "lessThanOrEqual": "latest"
      }
    ]
  }
]