Vulnerability Details : CVE-2021-27633
SAP NetWeaver AS for ABAP (RFC Gateway), 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 - 7.22,8.04,7.49,7.53,7.73,7.77,7.81,7.82,7.83, 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 ThCPIC() causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.
Vulnerability category: Memory Corruption
Exploit prediction scoring system (EPSS) score for CVE-2021-27633
Probability of exploitation activity in the next 30 days: 0.12%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 45 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-27633
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
SAP SE |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2021-27633
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by:
- cna@sap.com (Primary)
- nvd@nist.gov (Secondary)
References for CVE-2021-27633
-
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999
SAP Security Patch Day – June 2021 - Product Security Response at SAP - Community WikiBroken Link;Vendor Advisory
-
https://launchpad.support.sap.com/#/notes/3020209
SAP ONE Support Launchpad: Log OnPermissions Required;Vendor Advisory
Products affected by CVE-2021-27633
- cpe:2.3:a:sap:netweaver_abap:kernel_7.22:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_abap:kernel_7.49:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_abap:kernel_7.53:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_abap:kernel_7.73:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_abap:kernel_8.04:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_abap:krnl32nuc_7.22:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_abap:krnl32nuc_7.22ext:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_abap:krnl64nuc_7.22:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_abap:krnl64nuc_7.22ext:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_abap:krnl64nuc_7.49:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_abap:krnl64uc_7.22:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_abap:krnl64uc_7.22ext:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_abap:krnl64uc_8.04:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_abap:krnl64uc_7.49:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_abap:krnl64uc_7.53:*:*:*:*:*:*:*
- cpe:2.3:a:sap:netweaver_abap:krnl64uc_7.73:*:*:*:*:*:*:*