// For flags

CVE-2023-45648

Apache Tomcat: Trailer header parsing too lenient

Severity Score

5.3
*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-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially
crafted, invalid trailer header 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-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue.

Vulnerabilidad de validación de entrada incorrecta en Apache Tomcat.Tomcat desde 11.0.0-M1 hasta 11.0.0-M11, desde 10.1.0-M1 hasta 10.1.13, desde 9.0.0-M1 hasta 9.0.81 y desde 8.5.0 hasta 8.5 .93 no analizaron correctamente los encabezados de las colas HTTP. Un encabezado de avance no válido y especialmente manipulado podría hacer que Tomcat trate una sola solicitud como solicitudes múltiples, lo que genera la posibilidad de contrabando de solicitudes cuando está detrás de un proxy inverso. Se recomienda a los usuarios actualizar a la versión 11.0.0-M12 en adelante, 10.1.14 en adelante, 9.0.81 en adelante o 8.5.94 en adelante, que solucionan el problema.

A flaw was found in Apache Tomcat, where an improper input validation can occur. This flaw allows a malicious user to send a crafted request containing an invalid trailer header, which could be treated as multiple requests, potentially leading to request smuggling when behind a reverse proxy.

*Credits: Keran Mu and Jianjun Chen from Tsinghua University and Zhongguancun Laboratory
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2023-10-10 CVE Reserved
  • 2023-10-10 CVE Published
  • 2024-11-11 EPSS Updated
  • 2024-11-12 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
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 < 8.5.94
Search vendor "Apache" for product "Tomcat" and version " >= 8.5.0 < 8.5.94"
-
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
>= 9.0.1 < 9.0.81
Search vendor "Apache" for product "Tomcat" and version " >= 9.0.1 < 9.0.81"
-
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
>= 10.1.1 < 10.1.14
Search vendor "Apache" for product "Tomcat" and version " >= 10.1.1 < 10.1.14"
-
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone1
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone10
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone11
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone12
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone13
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone14
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone15
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone16
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone17
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone18
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone19
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone2
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone20
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone21
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone22
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone23
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone24
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone25
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone26
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone27
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone3
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone4
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone5
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone6
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone7
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone8
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
9.0.0
Search vendor "Apache" for product "Tomcat" and version "9.0.0"
milestone9
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone1
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone10
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone11
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone12
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone13
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone14
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone15
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone16
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone17
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone18
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone19
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone2
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone20
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone3
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone4
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone5
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone6
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone7
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone8
Affected
Apache
Search vendor "Apache"
Tomcat
Search vendor "Apache" for product "Tomcat"
10.1.0
Search vendor "Apache" for product "Tomcat" and version "10.1.0"
milestone9
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"
milestone11
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
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
10.0
Search vendor "Debian" for product "Debian Linux" and version "10.0"
-
Affected
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
11.0
Search vendor "Debian" for product "Debian Linux" and version "11.0"
-
Affected
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
12.0
Search vendor "Debian" for product "Debian Linux" and version "12.0"
-
Affected