CVE-2021-27633 — HIGH (7.5)

Vulnerability Description

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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Sap	Netweaver Abap	kernel_7.22

Related Weaknesses (CWE)

CWE-787

References

https://launchpad.support.sap.com/#/notes/3020209Permissions RequiredVendor Advisory
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999Broken LinkVendor Advisory
https://launchpad.support.sap.com/#/notes/3020209Permissions RequiredVendor Advisory
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999Broken LinkVendor Advisory

FAQ

What is CVE-2021-27633?

CVE-2021-27633 is a vulnerability with a CVSS score of 7.5 (HIGH). 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....

How severe is CVE-2021-27633?

CVE-2021-27633 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-27633?

Check the references section above for vendor advisories and patch information. Affected products include: Sap Netweaver Abap.