CVE-2021-27597: Input Validation
First published: Wed Jun 09 2021(Updated: )
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 memmove() causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.
Credit: cna@sap.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| SAP NetWeaver ABAP | =kernel_7.22 | |
| SAP NetWeaver ABAP | =kernel_7.49 | |
| SAP NetWeaver ABAP | =kernel_7.53 | |
| SAP NetWeaver ABAP | =kernel_7.73 | |
| SAP NetWeaver ABAP | =kernel_8.04 | |
| SAP NetWeaver ABAP | =krnl32nuc_7.22 | |
| SAP NetWeaver ABAP | =krnl32nuc_7.22ext | |
| SAP NetWeaver ABAP | =krnl64nuc_7.22 | |
| SAP NetWeaver ABAP | =krnl64nuc_7.22ext | |
| SAP NetWeaver ABAP | =krnl64nuc_7.49 | |
| SAP NetWeaver ABAP | =krnl64uc_7.22 | |
| SAP NetWeaver ABAP | =krnl64uc_7.22ext | |
| SAP NetWeaver ABAP | =krnl64uc_7.49 | |
| SAP NetWeaver ABAP | =krnl64uc_7.53 | |
| SAP NetWeaver ABAP | =krnl64uc_7.73 | |
| SAP NetWeaver ABAP | =krnl64uc_8.04 |
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Reference Links
Frequently Asked Questions
What is CVE-2021-27597?
CVE-2021-27597 is a vulnerability in SAP NetWeaver AS for ABAP (RFC Gateway) that allows an unauthenticated attacker to send a specific request to the system.
What is the severity of CVE-2021-27597?
The severity of CVE-2021-27597 is high with a CVSS score of 7.5.
Which versions of SAP NetWeaver AS for ABAP are affected by CVE-2021-27597?
CVE-2021-27597 affects multiple versions of SAP NetWeaver AS for ABAP including KRNL32NUC - 7.22, KRNL64NUC - 7.22, 7.49, KRNL64UC - 8.04, 7.22, 7.49, 7.53, and 7.73.
How can an attacker exploit CVE-2021-27597?
An attacker can exploit CVE-2021-27597 by sending a specific request to the SAP NetWeaver AS for ABAP (RFC Gateway) without authentication.
Where can I find more information about CVE-2021-27597?
You can find more information about CVE-2021-27597 in the SAP Support Portal and the SAP Community Network.
- collector/nvd-index
- agent/severity
- agent/references
- agent/author
- agent/weakness
- agent/tags
- agent/type
- agent/event
- agent/softwarecombine
- agent/first-publish-date
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- collector/mitre-cve
- source/MITRE
- vendor/sap
- canonical/sap netweaver abap
- version/sap netweaver abap/kernel_7.22
- version/sap netweaver abap/kernel_7.49
- version/sap netweaver abap/kernel_7.53
- version/sap netweaver abap/kernel_7.73
- version/sap netweaver abap/kernel_8.04
- version/sap netweaver abap/krnl32nuc_7.22
- version/sap netweaver abap/krnl32nuc_7.22ext
- version/sap netweaver abap/krnl64nuc_7.22
- version/sap netweaver abap/krnl64nuc_7.22ext
- version/sap netweaver abap/krnl64nuc_7.49
- version/sap netweaver abap/krnl64uc_7.22
- version/sap netweaver abap/krnl64uc_7.22ext
- version/sap netweaver abap/krnl64uc_7.49
- version/sap netweaver abap/krnl64uc_7.53
- version/sap netweaver abap/krnl64uc_7.73
- version/sap netweaver abap/krnl64uc_8.04