Arpine Maghakyan

Security Researcher of RedRays.

December 8, 2020
12:05 am

CVE-2020-26829 Missing Authentication Check In SAP NetWeaver AS JAVA (P2P Cluster Communication), SAP security note 2974774

Description

P2P Cluster Communication is dedicated for the server nodes in the cluster to exchange messages between each other. However, due to implementation flaw, it accepts arbitrary connections even from processes that are outside the cluster and even outside the network segment dedicated for the internal cluster communication. As result, an unauthenticated attacker can invoke certain functions that would otherwise be restricted to system administrators only, including access to system administration functions or shutting down the system completely.

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 | SP024 | 000010
J2EE ENGINE SERVERCORE 7.10 | SP025 | 000007
J2EE ENGINE SERVERCORE 7.11 | SP019 | 000010
J2EE ENGINE SERVERCORE 7.11 | SP020 | 000005
J2EE ENGINE SERVERCORE 7.20 | SP009 | 000153
J2EE ENGINE SERVERCORE 7.30 | SP015 | 000032
J2EE ENGINE SERVERCORE 7.30 | SP016 | 000036
J2EE ENGINE SERVERCORE 7.30 | SP017 | 000043
J2EE ENGINE SERVERCORE 7.30 | SP018 | 000047
J2EE ENGINE SERVERCORE 7.30 | SP019 | 000032
J2EE ENGINE SERVERCORE 7.30 | SP020 | 000020
J2EE ENGINE SERVERCORE 7.30 | SP021 | 000000
J2EE ENGINE SERVERCORE 7.31 | SP022 | 000047
J2EE ENGINE SERVERCORE 7.31 | SP023 | 000035
J2EE ENGINE SERVERCORE 7.31 | SP024 | 000033
J2EE ENGINE SERVERCORE 7.31 | SP025 | 000027
J2EE ENGINE SERVERCORE 7.31 | SP026 | 000023
J2EE ENGINE SERVERCORE 7.31 | SP027 | 000006
J2EE ENGINE SERVERCORE 7.31 | SP028 | 000000
J2EE ENGINE SERVERCORE 7.40 | SP017 | 000047

Affected component

CVSS

Score: 10.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Exploit

Exploit is not available.
For detailed information please contact the mail [email protected].

URL

https://launchpad.support.sap.com/#/notes/2974774

TAGS

#Cluster-Manager
#P2P-Cluster-Communication
#Join-Port
#Broken-Authentication
#&160-CVE-2020-26829

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