CVE-2021-27631
SAP NetWeaver Denial of Service (DoS) Vulnerability
Description
SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49,7.53,7.73, allows an unauthenticated attacker without specific knowledge of the system to send a specially crafted packet over a network which will trigger an internal error in the system due to improper input validation in method EnqConvUniToSrvReq() causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.
INFO
Published Date :
June 9, 2021, 2:15 p.m.
Last Modified :
Oct. 31, 2022, 2:45 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2021-27631 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2021-27631.
| URL | Resource |
|---|---|
| https://launchpad.support.sap.com/#/notes/3020104 | Permissions Required Vendor Advisory |
| https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999 | Broken Link 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
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-27631 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-27631 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 -
Modified Analysis by [email protected]
Oct. 31, 2022
Action Type Old Value New Value Changed Reference Type https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999 Vendor Advisory https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999 Broken Link, Vendor Advisory -
CVE Modified by [email protected]
Oct. 17, 2022
Action Type Old Value New Value Removed Reference http://packetstormsecurity.com/files/164595/SAP-NetWeaver-ABAP-Enqueue-Memory-Corruption.html [Patch, Third Party Advisory, VDB Entry] Removed Reference http://seclists.org/fulldisclosure/2021/Oct/29 [Mailing List, Patch, Third Party Advisory] Removed CWE SAP SE CWE-20 Added CWE SAP SE CWE-476 Removed CWE Reason CWE-20 / More specific CWE option available -
Reanalysis by [email protected]
Oct. 07, 2022
Action Type Old Value New Value Removed CWE NIST CWE-20 Added CWE NIST CWE-476 -
Modified Analysis by [email protected]
Nov. 04, 2021
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/164595/SAP-NetWeaver-ABAP-Enqueue-Memory-Corruption.html No Types Assigned http://packetstormsecurity.com/files/164595/SAP-NetWeaver-ABAP-Enqueue-Memory-Corruption.html Patch, Third Party Advisory, VDB Entry Changed Reference Type http://seclists.org/fulldisclosure/2021/Oct/29 No Types Assigned http://seclists.org/fulldisclosure/2021/Oct/29 Mailing List, Patch, Third Party Advisory -
CVE Modified by [email protected]
Oct. 22, 2021
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/164595/SAP-NetWeaver-ABAP-Enqueue-Memory-Corruption.html [No Types Assigned] -
CVE Modified by [email protected]
Oct. 22, 2021
Action Type Old Value New Value Added Reference http://seclists.org/fulldisclosure/2021/Oct/29 [No Types Assigned] -
Initial Analysis by [email protected]
Jun. 14, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://launchpad.support.sap.com/#/notes/3020104 No Types Assigned https://launchpad.support.sap.com/#/notes/3020104 Permissions Required, Vendor Advisory Changed Reference Type https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999 No Types Assigned https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999 Vendor Advisory Added CWE NIST CWE-20 Added CPE Configuration OR *cpe:2.3:a:sap:netweaver_as_abap:kernel_7.22:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:kernel_7.49:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:kernel_7.53:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:kernel_7.73:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:kernel_7.77:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:kernel_7.81:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:kernel_7.82:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:kernel_7.83:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:kernel_8.04:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:krnl32nuc_7.22:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:krnl32nuc_7.22ext:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:krnl64nuc_7.22:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:krnl64nuc_7.22ext:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:krnl64nuc_7.49:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:krnl64uc_7.22:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:krnl64uc_7.22ext:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:krnl64uc_7.49:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:krnl64uc_7.53:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:krnl64uc_7.73:*:*:*:*:*:*:* *cpe:2.3:a:sap:netweaver_as_abap:krnl64uc_8.04:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-27631 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-2021-27631
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.16 }} 0.05%
score
0.50713
percentile