// For flags

CVE-2021-33683

 

Severity Score

4.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

SAP Web Dispatcher and Internet Communication Manager (ICM), versions - KRNL32NUC 7.21, 7.21EXT, 7.22, 7.22EXT, KRNL32UC 7.21, 7.21EXT, 7.22, 7.22EXT, KRNL64NUC 7.21, 7.21EXT, 7.22, 7.22EXT, 7.49, KRNL64UC 7.21, 7.21EXT, 7.22, 7.22EXT, 7.49, 7.53, 7.73, WEBDISP 7.53, 7.73, 7.77, 7.81, 7.82, 7.83, KERNEL 7.21, 7.22, 7.49, 7.53, 7.73, 7.77, 7.81, 7.82, 7.83, process invalid HTTP header. The incorrect handling of the invalid Transfer-Encoding header in a particular manner leads to a possibility of HTTP Request Smuggling attack. An attacker could exploit this vulnerability to bypass web application firewall protection, divert sensitive data such as customer requests, session credentials, etc.

SAP Web Dispatcher e Internet Communication Manager (ICM), versiones - KRNL32NUC 7.21, 7.21EXT, 7.22, 7.22EXT, KRNL32UC 7.21, 7.21EXT, 7.22, 7.22EXT, KRNL64NUC 7.21, 7.21EXT, 7.22EXT, 7. 49, KRNL64UC 7.21, 7.21EXT, 7.22, 7.22EXT, 7.49, 7.53, 7.73, WEBDISP 7.53, 7.73, 7.77, 7.81, 7.82, 7.83, KERNEL 7.21, 7.22, 7.49, 7.53, 7.73, 7.77, 7.81, 7.82, 7.83, procesan un encabezado HTTP no válido. El manejo incorrecto de la cabecera Transfer-Encoding no válida de manera particular conlleva a una posibilidad de ataque de contrabando de peticiones HTTP. Un atacante podría explotar esta vulnerabilidad para omitir la protección del firewall de la aplicación web y desviar datos confidenciales, como peticiones de clientes, credenciales de sesión, etc

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-05-28 CVE Reserved
  • 2021-07-14 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
CAPEC
References (1)
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Sap
Search vendor "Sap"
Web Dispatcher
Search vendor "Sap" for product "Web Dispatcher"
7.8_kernel_7.21
Search vendor "Sap" for product "Web Dispatcher" and version "7.8_kernel_7.21"
-
Affected
Sap
Search vendor "Sap"
Web Dispatcher
Search vendor "Sap" for product "Web Dispatcher"
7.21ext
Search vendor "Sap" for product "Web Dispatcher" and version "7.21ext"
-
Affected
Sap
Search vendor "Sap"
Web Dispatcher
Search vendor "Sap" for product "Web Dispatcher"
7.22
Search vendor "Sap" for product "Web Dispatcher" and version "7.22"
-
Affected
Sap
Search vendor "Sap"
Web Dispatcher
Search vendor "Sap" for product "Web Dispatcher"
7.22ext
Search vendor "Sap" for product "Web Dispatcher" and version "7.22ext"
-
Affected
Sap
Search vendor "Sap"
Web Dispatcher
Search vendor "Sap" for product "Web Dispatcher"
7.49
Search vendor "Sap" for product "Web Dispatcher" and version "7.49"
-
Affected
Sap
Search vendor "Sap"
Web Dispatcher
Search vendor "Sap" for product "Web Dispatcher"
7.53
Search vendor "Sap" for product "Web Dispatcher" and version "7.53"
-
Affected
Sap
Search vendor "Sap"
Web Dispatcher
Search vendor "Sap" for product "Web Dispatcher"
7.73
Search vendor "Sap" for product "Web Dispatcher" and version "7.73"
-
Affected
Sap
Search vendor "Sap"
Web Dispatcher
Search vendor "Sap" for product "Web Dispatcher"
7.77
Search vendor "Sap" for product "Web Dispatcher" and version "7.77"
-
Affected
Sap
Search vendor "Sap"
Web Dispatcher
Search vendor "Sap" for product "Web Dispatcher"
7.81
Search vendor "Sap" for product "Web Dispatcher" and version "7.81"
-
Affected
Sap
Search vendor "Sap"
Web Dispatcher
Search vendor "Sap" for product "Web Dispatcher"
7.82
Search vendor "Sap" for product "Web Dispatcher" and version "7.82"
-
Affected
Sap
Search vendor "Sap"
Web Dispatcher
Search vendor "Sap" for product "Web Dispatcher"
krnl32nuc_7.21
Search vendor "Sap" for product "Web Dispatcher" and version "krnl32nuc_7.21"
-
Affected
Sap
Search vendor "Sap"
Web Dispatcher
Search vendor "Sap" for product "Web Dispatcher"
krnl32uc_7.21
Search vendor "Sap" for product "Web Dispatcher" and version "krnl32uc_7.21"
-
Affected
Sap
Search vendor "Sap"
Web Dispatcher
Search vendor "Sap" for product "Web Dispatcher"
krnl64nuc_7.21
Search vendor "Sap" for product "Web Dispatcher" and version "krnl64nuc_7.21"
-
Affected
Sap
Search vendor "Sap"
Web Dispatcher
Search vendor "Sap" for product "Web Dispatcher"
krnl64uc_7.21
Search vendor "Sap" for product "Web Dispatcher" and version "krnl64uc_7.21"
-
Affected
Sap
Search vendor "Sap"
Web Dispatcher
Search vendor "Sap" for product "Web Dispatcher"
webdisp_7.53
Search vendor "Sap" for product "Web Dispatcher" and version "webdisp_7.53"
-
Affected
Sap
Search vendor "Sap"
Internet Communication Manager
Search vendor "Sap" for product "Internet Communication Manager"
7.21ext
Search vendor "Sap" for product "Internet Communication Manager" and version "7.21ext"
-
Affected
Sap
Search vendor "Sap"
Internet Communication Manager
Search vendor "Sap" for product "Internet Communication Manager"
7.22
Search vendor "Sap" for product "Internet Communication Manager" and version "7.22"
-
Affected
Sap
Search vendor "Sap"
Internet Communication Manager
Search vendor "Sap" for product "Internet Communication Manager"
7.22ext
Search vendor "Sap" for product "Internet Communication Manager" and version "7.22ext"
-
Affected
Sap
Search vendor "Sap"
Internet Communication Manager
Search vendor "Sap" for product "Internet Communication Manager"
7.49
Search vendor "Sap" for product "Internet Communication Manager" and version "7.49"
-
Affected
Sap
Search vendor "Sap"
Internet Communication Manager
Search vendor "Sap" for product "Internet Communication Manager"
7.53
Search vendor "Sap" for product "Internet Communication Manager" and version "7.53"
-
Affected
Sap
Search vendor "Sap"
Internet Communication Manager
Search vendor "Sap" for product "Internet Communication Manager"
7.73
Search vendor "Sap" for product "Internet Communication Manager" and version "7.73"
-
Affected
Sap
Search vendor "Sap"
Internet Communication Manager
Search vendor "Sap" for product "Internet Communication Manager"
7.77
Search vendor "Sap" for product "Internet Communication Manager" and version "7.77"
-
Affected
Sap
Search vendor "Sap"
Internet Communication Manager
Search vendor "Sap" for product "Internet Communication Manager"
7.81
Search vendor "Sap" for product "Internet Communication Manager" and version "7.81"
-
Affected
Sap
Search vendor "Sap"
Internet Communication Manager
Search vendor "Sap" for product "Internet Communication Manager"
7.82
Search vendor "Sap" for product "Internet Communication Manager" and version "7.82"
-
Affected
Sap
Search vendor "Sap"
Internet Communication Manager
Search vendor "Sap" for product "Internet Communication Manager"
kernel_7.21
Search vendor "Sap" for product "Internet Communication Manager" and version "kernel_7.21"
-
Affected
Sap
Search vendor "Sap"
Internet Communication Manager
Search vendor "Sap" for product "Internet Communication Manager"
krnl32nuc_7.21
Search vendor "Sap" for product "Internet Communication Manager" and version "krnl32nuc_7.21"
-
Affected
Sap
Search vendor "Sap"
Internet Communication Manager
Search vendor "Sap" for product "Internet Communication Manager"
krnl32uc_7.21
Search vendor "Sap" for product "Internet Communication Manager" and version "krnl32uc_7.21"
-
Affected
Sap
Search vendor "Sap"
Internet Communication Manager
Search vendor "Sap" for product "Internet Communication Manager"
krnl64nuc_7.21
Search vendor "Sap" for product "Internet Communication Manager" and version "krnl64nuc_7.21"
-
Affected
Sap
Search vendor "Sap"
Internet Communication Manager
Search vendor "Sap" for product "Internet Communication Manager"
krnl64uc_7.21
Search vendor "Sap" for product "Internet Communication Manager" and version "krnl64uc_7.21"
-
Affected
Sap
Search vendor "Sap"
Internet Communication Manager
Search vendor "Sap" for product "Internet Communication Manager"
webdisp_7.53
Search vendor "Sap" for product "Internet Communication Manager" and version "webdisp_7.53"
-
Affected