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Arpine Maghakyan

Arpine Maghakyan

Security Researcher of RedRays.

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

    BC-JAS-COR-CLS
    Clustering

CVSS

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

Exploit

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

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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