SAP NetWeaver AS Java and AS ABAP Multiple Vulnerabilities (Jan 2021)

high Nessus Plugin ID 145705
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VPR Score: 5.9

Synopsis

The remote SAP NetWeaver server is affected by multiple vulnerabilities.

Description

The version of SAP NetWeaver AS Java or ABAP detected on the remote host is affected by multiple vulnerabilities, as follows:

- SAP NetWeaver AS Java (HTTP Service), versions 7.10, 7.11, 7.20, 7.30, 7.31, 7.40, 7.50, allows an attacker with administrator privileges to access user sensitive data such as passwords in trace files, when the user logs in and sends request with login credentials, leading to Information Disclosure.
(CVE-2020-6224)

- SAP NetWeaver AS JAVA, versions - 7.20, 7.30, 7.31, 7.40, 7.50, allows an attacker who is authenticated as an administrator to use the administrator console, to expose unauthenticated access to the file system and upload a malicious file. The attacker or another user can then use a separate mechanism to execute OS commands through the uploaded file leading to Privilege Escalation and completely compromise the confidentiality, integrity and availability of the server operating system and any application running on it. (CVE-2020-26820)

- SAP AS JAVA (Key Storage Service), versions - 7.10, 7.11, 7.20 ,7.30, 7.31, 7.40, 7.50, has the key material which stored in the SAP NetWeaver AS Java Key Storage service stored in the database in the DER encoded format and is encrypted. This enables an attacker who has administrator access to the SAP NetWeaver AS Java to decode the keys of missing encryption and get some application data and client credentials of adjacent systems. This highly Confidentiality as information disclosed could contain client credentials of adjacent systems. CVE-2020-26816)

- SAP NetWeaver AS ABAP, versions 740, 750, 751, 752, 753, 754, 755, allows an unauthenticated attacker to prevent legitimate users from accessing a service, either by crashing or flooding the service, this has a high impact on the availability of the service. (CVE-2021-21446)

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://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=564760476

Plugin Details

Severity: High

ID: 145705

File Name: sap_netweaver_as_jan_2021.nasl

Version: 1.2

Type: remote

Family: Web Servers

Published: 2/1/2021

Updated: 2/2/2021

Dependencies: sap_netweaver_as_web_detect.nbin

Configuration: Enable paranoid mode

Risk Information

Risk Factor: High

VPR Score: 5.9

CVSS Score Source: CVE-2020-26820

CVSS v2.0

Base Score: 9

Temporal Score: 6.7

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

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

CVSS v3.0

Base Score: 7.2

Temporal Score: 6.3

Vector: CVSS:3.0/AV:N/AC:L/PR:H/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: 1/12/2021

Vulnerability Publication Date: 4/14/2020

Reference Information

CVE: CVE-2020-6224, CVE-2020-26816, CVE-2020-26820, CVE-2021-21446

IAVA: 2021-A-0043