PT-2021-17565 · Sap · Sap Netweaver Abap Server+1

Published 2021-06-09 · Updated 2022-10-31 · CVE-2021-27630

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) versions 7.22, 7.22EXT, 7.49, 7.53, 7.73, 8.04

Description The issue allows an unauthenticated attacker without specific knowledge of the system to send a specially crafted packet over a network, triggering an internal error in the system due to improper input validation in the EnqConvUniToSrvReq() method. This causes the system to crash and renders it unavailable. In this attack, no data in the system can be viewed or modified.

Recommendations For SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) version 7.22, consider applying a patch to fix the improper input validation issue in the EnqConvUniToSrvReq() method. For SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) version 7.22EXT, consider applying a patch to fix the improper input validation issue in the EnqConvUniToSrvReq() method. For SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) version 7.49, consider applying a patch to fix the improper input validation issue in the EnqConvUniToSrvReq() method. For SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) version 7.53, consider applying a patch to fix the improper input validation issue in the EnqConvUniToSrvReq() method. For SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) version 7.73, consider applying a patch to fix the improper input validation issue in the EnqConvUniToSrvReq() method. For SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) version 8.04, consider applying a patch to fix the improper input validation issue in the EnqConvUniToSrvReq() method. As a temporary workaround, consider disabling the EnqConvUniToSrvReq() method until a patch is available.

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2021-27630

Affected Products

Abap Platform

Sap Netweaver Abap Server

References · 5

• https://osv.dev/vulnerability/CVE-2021-27630 · Vendor Advisory
• https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-27630 · Security Note
• https://launchpad.support.sap.com/#/notes/3020104 · Vendor Advisory
• https://t.me/cvenotify/16288 · Telegram Post