PT-2021-17567 · Sap · Sap Netweaver Abap Server

Published 2021-06-09 · Updated 2022-10-31 · CVE-2021-27632

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 SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) version 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) versions 7.22, 7.22EXT, 7.49, 7.53, 7.73, consider disabling the EnqConvUniToSrvReq() method until a patch is available. For SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) version 8.04, consider disabling the EnqConvUniToSrvReq() method until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2021-27632

Affected Products

Sap Netweaver Abap Server

References · 5

• https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-27632 · Security Note
• https://osv.dev/vulnerability/CVE-2021-27632 · Vendor Advisory
• https://launchpad.support.sap.com/#/notes/3020104 · Vendor Advisory
• https://t.me/cvenotify/22960 · Telegram Post