Arpine Maghakyan

Security Researcher of RedRays.

December 22, 2020
12:05 am

CVE-2020-26816 Missing Encryption in SAP NetWeaver AS Java (Key Storage Service), SAP security note 2971163

Description

UPDATE 22nd December 2020: This note has been re-released with updated ‘Support Packages & Patches’ information. Patch level has been updated for the release J2EE ENGINE SERVERCORE 7.30 SP021

The key material in the SAP NetWeaver AS Java Keystore service that is stored in database as DER encoded format is not encrypted. This enables an attacker who has administrator access to decode the keys and get some application data and client credentials of adjacent systems. This highly impacts Confidentiality as information disclosed could contain client credentials of adjacent systems.

Available fix and Supported packages

SERVERCORE | 7.10 | 7.10
SERVERCORE | 7.11 | 7.11
SERVERCORE | 7.20 | 7.20
SERVERCORE | 7.30 | 7.30
SERVERCORE | 7.31 | 7.31
SERVERCORE | 7.40 | 7.40
SERVERCORE | 7.50 | 7.50
J2EE ENGINE SERVERCORE 7.10 | SP025 | 000006
J2EE ENGINE SERVERCORE 7.11 | SP020 | 000004
J2EE ENGINE SERVERCORE 7.20 | SP009 | 000151
J2EE ENGINE SERVERCORE 7.30 | SP015 | 000031
J2EE ENGINE SERVERCORE 7.30 | SP016 | 000035
J2EE ENGINE SERVERCORE 7.30 | SP017 | 000041
J2EE ENGINE SERVERCORE 7.30 | SP018 | 000045
J2EE ENGINE SERVERCORE 7.30 | SP019 | 000030
J2EE ENGINE SERVERCORE 7.30 | SP020 | 000018
J2EE ENGINE SERVERCORE 7.30 | SP021 | 000001
J2EE ENGINE SERVERCORE 7.31 | SP022 | 000045
J2EE ENGINE SERVERCORE 7.31 | SP023 | 000033
J2EE ENGINE SERVERCORE 7.31 | SP024 | 000031
J2EE ENGINE SERVERCORE 7.31 | SP025 | 000025
J2EE ENGINE SERVERCORE 7.31 | SP026 | 000021
J2EE ENGINE SERVERCORE 7.31 | SP027 | 000004
J2EE ENGINE SERVERCORE 7.31 | SP028 | 000000
J2EE ENGINE SERVERCORE 7.40 | SP017 | 000045
J2EE ENGINE SERVERCORE 7.40 | SP018 | 000034
J2EE ENGINE SERVERCORE 7.40 | SP019 | 000031

Affected component

CVSS

Score: 5.4
CVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N

Exploit

Detailed vulnerability information added to RedRays Security Platform. Contact [email protected] for details.

URL

https://launchpad.support.sap.com/#/notes/2971163

TAGS

#Java-Key-Storage
#Keys
#Encryption
#&160-CVE-2020-26816

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