// For flags

CVE-2019-16792

HTTP Request Smuggling: Content-Length Sent Twice in Waitress

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Waitress through version 1.3.1 allows request smuggling by sending the Content-Length header twice. Waitress would header fold a double Content-Length header and due to being unable to cast the now comma separated value to an integer would set the Content-Length to 0 internally. If two Content-Length headers are sent in a single request, Waitress would treat the request as having no body, thereby treating the body of the request as a new request in HTTP pipelining. This issue is fixed in Waitress 1.4.0.

Waitress hasta la versión 1.3.1, permite el tráfico no autorizado de peticiones mediante el envío del encabezado Content-Length dos veces. Waitress doblará un encabezado Content-Length doble y, al no ser capaz de convertir el valor ahora separado por comas en un entero, establecerá a Content-Length en 0 internamente. Si dos encabezados Content-Length se envían en una sola petición, Waitress trataría la petición como si no tiene cuerpo, por lo que tratará el cuerpo de la petición como una nueva petición en HTTP pipelining. Este problema es corregido en Waitress versión 1.4.0.

*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
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
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
  • 2019-09-24 CVE Reserved
  • 2020-01-22 CVE Published
  • 2024-05-17 EPSS Updated
  • 2024-08-05 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
Agendaless
Search vendor "Agendaless"
 Waitress
Search vendor "Agendaless" for product "Waitress"
 <= 1.3.1
Search vendor "Agendaless" for product "Waitress" and version " <= 1.3.1"
-
Affected
Oracle
Search vendor "Oracle"
 Communications Cloud Native Core Network Function Cloud Native Environment
Search vendor "Oracle" for product "Communications Cloud Native Core Network Function Cloud Native Environment"
 1.10.0
Search vendor "Oracle" for product "Communications Cloud Native Core Network Function Cloud Native Environment" and version "1.10.0"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 9.0
Search vendor "Debian" for product "Debian Linux" and version "9.0"
-
Affected