// For flags

CVE-2023-46589

Apache Tomcat: HTTP request smuggling via malformed trailer headers

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single
request as multiple requests leading to the possibility of request
smuggling when behind a reverse proxy.

Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.

Vulnerabilidad de validación de entrada incorrecta en Apache Tomcat.Tomcat desde 11.0.0-M1 hasta 11.0.0-M10, desde 10.1.0-M1 hasta 10.1.15, desde 9.0.0-M1 hasta 9.0.82 y desde 8.5.0 hasta 8.5 .95 no analizó correctamente los encabezados de las colas HTTP. Un encabezado de avance que exceda el límite de tamaño del encabezado podría hacer que Tomcat trate una sola solicitud como solicitudes múltiples, lo que generaría la posibilidad de contrabando de solicitudes cuando se encuentre detrás de un proxy inverso. Se recomienda a los usuarios actualizar a la versión 11.0.0-M11 en adelante, 10.1.16 en adelante, 9.0.83 en adelante o 8.5.96 en adelante, que solucionan el problema.

An improper Input validation flaw was found in Apache Tomcat due to incorrect parsing of HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single request as multiple requests, leading to the possibility of request smuggling when behind a reverse proxy.

*Credits: Norihito Aimoto (OSSTech Corporation)
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2023-10-23 CVE Reserved
  • 2023-11-28 CVE Published
  • 2024-01-10 EPSS Updated
  • 2024-08-02 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
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
>= 8.5.0 < 8.5.96
Search vendor "Apache" for product "Tomcat" and version " >= 8.5.0 < 8.5.96"
-
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
>= 9.0.0 < 9.0.83
Search vendor "Apache" for product "Tomcat" and version " >= 9.0.0 < 9.0.83"
-
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
>= 10.1.0 < 10.1.16
Search vendor "Apache" for product "Tomcat" and version " >= 10.1.0 < 10.1.16"
-
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
11.0.0
Search vendor "Apache" for product "Tomcat" and version "11.0.0"
milestone1
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
11.0.0
Search vendor "Apache" for product "Tomcat" and version "11.0.0"
milestone10
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
11.0.0
Search vendor "Apache" for product "Tomcat" and version "11.0.0"
milestone2
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
11.0.0
Search vendor "Apache" for product "Tomcat" and version "11.0.0"
milestone3
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
11.0.0
Search vendor "Apache" for product "Tomcat" and version "11.0.0"
milestone4
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
11.0.0
Search vendor "Apache" for product "Tomcat" and version "11.0.0"
milestone5
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
11.0.0
Search vendor "Apache" for product "Tomcat" and version "11.0.0"
milestone6
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
11.0.0
Search vendor "Apache" for product "Tomcat" and version "11.0.0"
milestone7
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
11.0.0
Search vendor "Apache" for product "Tomcat" and version "11.0.0"
milestone8
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
11.0.0
Search vendor "Apache" for product "Tomcat" and version "11.0.0"
milestone9
Affected