9.4
CRITICAL
CVE-2021-38162
SAP Web Dispatcher Denial of Service and Command Execution
Description

SAP Web Dispatcher versions - 7.49, 7.53, 7.77, 7.81, KRNL64NUC - 7.22, 7.22EXT, 7.49, KRNL64UC -7.22, 7.22EXT, 7.49, 7.53, KERNEL - 7.22, 7.49, 7.53, 7.77, 7.81, 7.83 processes allow an unauthenticated attacker to submit a malicious crafted request over a network to a front-end server which may, over several attempts, result in a back-end server confusing the boundaries of malicious and legitimate messages. This can result in the back-end server executing a malicious payload which can be used to read or modify any information on the server or consume server resources making it temporarily unavailable.

INFO

Published Date :

Sept. 14, 2021, 12:15 p.m.

Last Modified :

Nov. 21, 2024, 6:16 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.5

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2021-38162 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-38162 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.

ID Vendor Product Action
1 Sap web_dispatcher
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-2021-38162.

URL Resource
http://packetstormsecurity.com/files/166964/SAP-Web-Dispatcher-HTTP-Request-Smuggling.html Exploit Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2022/May/3 Exploit Mailing List Third Party Advisory
https://launchpad.support.sap.com/#/notes/3080567 Permissions Required
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=585106405 Vendor Advisory
http://packetstormsecurity.com/files/166964/SAP-Web-Dispatcher-HTTP-Request-Smuggling.html Exploit Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2022/May/3 Exploit Mailing List Third Party Advisory
https://launchpad.support.sap.com/#/notes/3080567 Permissions Required
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=585106405 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).

Onapsis Security Advisories. https://www.onapsis.com

Updated: 10 months, 1 week ago
10 stars 1 fork 1 watcher
Born at : March 17, 2021, 5:01 p.m. This repo has been linked 44 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-38162 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-38162 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 af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/166964/SAP-Web-Dispatcher-HTTP-Request-Smuggling.html
    Added Reference http://seclists.org/fulldisclosure/2022/May/3
    Added Reference https://launchpad.support.sap.com/#/notes/3080567
    Added Reference https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=585106405
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Jul. 10, 2023

    Action Type Old Value New Value
    Removed CVSS V3 SAP SE AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L
    Added CVSS V3.1 SAP SE AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L
  • Modified Analysis by [email protected]

    Oct. 06, 2022

    Action Type Old Value New Value
    Changed Reference Type http://packetstormsecurity.com/files/166964/SAP-Web-Dispatcher-HTTP-Request-Smuggling.html No Types Assigned http://packetstormsecurity.com/files/166964/SAP-Web-Dispatcher-HTTP-Request-Smuggling.html Exploit, Third Party Advisory, VDB Entry
    Changed Reference Type http://seclists.org/fulldisclosure/2022/May/3 No Types Assigned http://seclists.org/fulldisclosure/2022/May/3 Exploit, Mailing List, Third Party Advisory
  • CVE Modified by [email protected]

    May. 05, 2022

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/166964/SAP-Web-Dispatcher-HTTP-Request-Smuggling.html [No Types Assigned]
  • CVE Modified by [email protected]

    May. 04, 2022

    Action Type Old Value New Value
    Added Reference http://seclists.org/fulldisclosure/2022/May/3 [No Types Assigned]
  • Initial Analysis by [email protected]

    Sep. 24, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
    Changed Reference Type https://launchpad.support.sap.com/#/notes/3080567 No Types Assigned https://launchpad.support.sap.com/#/notes/3080567 Permissions Required
    Changed Reference Type https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=585106405 No Types Assigned https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=585106405 Vendor Advisory
    Added CWE NIST CWE-444
    Added CPE Configuration OR *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:7.77:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher:7.81:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher:7.83:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher:kernel_7.22:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher:krnl64nuc_7.22:*:*:*:*:*:*:* *cpe:2.3:a:sap:web_dispatcher:krnl64uc_7.22:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-38162 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-2021-38162 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.92 }} -7.17%

score

0.82640

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability