CVE-2021-33683
SAP Web Dispatcher HTTP Request Smuggling Vulnerability
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.
INFO
Published Date :
July 14, 2021, 12:15 p.m.
Last Modified :
Sept. 28, 2023, 3:51 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
2.8
Affected Products
The following products are affected by CVE-2021-33683
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-33683.
| URL | Resource |
|---|---|
| https://launchpad.support.sap.com/#/notes/3000663 | Permissions Required |
| https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=580617506 | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-33683 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-33683 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Sep. 28, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:7.21ext:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:7.22:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:7.22ext:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:7.49:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:7.53:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:7.73:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:7.77:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:7.81:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:7.82:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:kernel_7.21:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:krnl32nuc_7.21:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:krnl32uc_7.21:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:krnl64nuc_7.21:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:krnl64uc_7.21:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:webdisp_7.53:*:*:*:*:*:*:* OR *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:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:sap:internet_communication_manager:7.21ext:*:*:*:*:*:*:* *cpe:2.3:a:sap:internet_communication_manager:7.22:*:*:*:*:*:*:* *cpe:2.3:a:sap:internet_communication_manager:7.22ext:*:*:*:*:*:*:* *cpe:2.3:a:sap:internet_communication_manager:7.49:*:*:*:*:*:*:* *cpe:2.3:a:sap:internet_communication_manager:7.53:*:*:*:*:*:*:* *cpe:2.3:a:sap:internet_communication_manager:7.73:*:*:*:*:*:*:* *cpe:2.3:a:sap:internet_communication_manager:7.77:*:*:*:*:*:*:* *cpe:2.3:a:sap:internet_communication_manager:7.81:*:*:*:*:*:*:* *cpe:2.3:a:sap:internet_communication_manager:7.82:*:*:*:*:*:*:* *cpe:2.3:a:sap:internet_communication_manager:kernel_7.21:*:*:*:*:*:*:* *cpe:2.3:a:sap:internet_communication_manager:krnl32nuc_7.21:*:*:*:*:*:*:* *cpe:2.3:a:sap:internet_communication_manager:krnl32uc_7.21:*:*:*:*:*:*:* *cpe:2.3:a:sap:internet_communication_manager:krnl64nuc_7.21:*:*:*:*:*:*:* *cpe:2.3:a:sap:internet_communication_manager:krnl64uc_7.21:*:*:*:*:*:*:* *cpe:2.3:a:sap:internet_communication_manager:webdisp_7.53:*:*:*:*:*:*:* -
Initial Analysis by [email protected]
Jul. 27, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Changed Reference Type https://launchpad.support.sap.com/#/notes/3000663 No Types Assigned https://launchpad.support.sap.com/#/notes/3000663 Permissions Required Changed Reference Type https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=580617506 No Types Assigned https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=580617506 Vendor Advisory Added CWE NIST CWE-444 Added CPE Configuration OR *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:7.21ext:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:7.22:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:7.22ext:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:7.49:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:7.53:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:7.73:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:7.77:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:7.81:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:7.82:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:kernel_7.21:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:krnl32nuc_7.21:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:krnl32uc_7.21:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:krnl64nuc_7.21:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:krnl64uc_7.21:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher_and_internet_communication_manager:webdisp_7.53:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-33683 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-33683
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.05 }} 0.00%
score
0.20649
percentile