Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-33683

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
14/07/2021
Last modified:
28/09/2023

Description

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): Low
Availability (A): None

Base Score 3.x
4.30
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:L/Au:S/C:N/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 4.00 MEDIUM
Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): Single
Confidentiality (C): None
Integrity (I): Physical
Availability (A): None

Base Score 2.0
4.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:sap:web_dispatcher:7.8_kernel_7.21:*:*:*:*:*:*:*
cpe:2.3:a:sap:web_dispatcher:7.21ext:*:*:*:*:*:*:*
cpe:2.3:a:sap:web_dispatcher:7.22:*:*:*:*:*:*:*
cpe:2.3:a:sap:web_dispatcher:7.22ext:*:*:*:*:*:*:*
cpe:2.3:a:sap:web_dispatcher:7.49:*:*:*:*:*:*:*
cpe:2.3:a:sap:web_dispatcher:7.53:*:*:*:*:*:*:*
cpe:2.3:a:sap:web_dispatcher:7.73:*:*:*:*:*:*:*
cpe:2.3:a:sap:web_dispatcher:7.77:*:*:*:*:*:*:*
cpe:2.3:a:sap:web_dispatcher:7.81:*:*:*:*:*:*:*
cpe:2.3:a:sap:web_dispatcher:7.82:*:*:*:*:*:*:*
cpe:2.3:a:sap:web_dispatcher:krnl32nuc_7.21:*:*:*:*:*:*:*
cpe:2.3:a:sap:web_dispatcher:krnl32uc_7.21:*:*:*:*:*:*:*
cpe:2.3:a:sap:web_dispatcher:krnl64nuc_7.21:*:*:*:*:*:*:*
cpe:2.3:a:sap:web_dispatcher:krnl64uc_7.21:*:*:*:*:*:*:*
cpe:2.3:a:sap:web_dispatcher:webdisp_7.53:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools