SAP NetWeaver AS ABAP Improper Authentication (June 2021)

critical Nessus Plugin ID 150417
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote SAP NetWeaver server is affected by an improper authentication vulnerability.

Description

An improper authentication vulnerability exists in SAP NetWeaver Application Server ABAP. ABAP Server and ABAP Platform do not create information about internal and external RFC user in distinguished and consistent format, which may be exploited by malicious users to obtain illegitimate access to the system.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Apply the appropriate patch according to the vendor advisory.

See Also

https://launchpad.support.sap.com/#/notes/3007182

http://www.nessus.org/u?98cbee9d

Plugin Details

Severity: Critical

ID: 150417

File Name: sap_netweaver_as_3007182.nasl

Version: 1.4

Type: remote

Family: Web Servers

Published: 6/9/2021

Updated: 6/11/2021

Dependencies: sap_netweaver_as_web_detect.nbin

Configuration: Enable paranoid mode

Risk Information

CVSS Score Source: CVE-2021-27610

VPR

Risk Factor: Medium

Score: 6.3

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:sap:netweaver_application_server

Required KB Items: installed_sw/SAP Netweaver Application Server (AS), Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 6/8/2021

Vulnerability Publication Date: 6/8/2021

Reference Information

CVE: CVE-2021-27610

IAVA: 2021-A-0281