Advisory
On 08.12.2020 a security relevant correction has been released by SAP SE. The manufacturer resolves an issue within Java.
SAP Note 2971163 addresses "[CVE-2020-26816] Missing Encryption in SAP NetWeaver AS Java (Key Storage Service)" to prevent missing security function with a medium risk for exploitation.
A workaround does not exist, according to SAP Security Advisory team. It is advisable to implement the correction as part of maintenance, the team suggests.
Risk specification
The key material in the SAP NetWeaver AS Java keystore service that is stored in the database as DER-encoded format is not encrypted. This enables an attacker with administrator access to decode the keys and get some application data and client credentials of adjacent systems.Solution
After the next system restart, the Key Storage data will be encrypted.
Affected System
SAP Netweaver Application Server Java is part of the SAP NetWeaver Application Platform. It provides the complete infrastructure for deploying and running Java applications.
- The AS Java Home: SAP Netweaver Application Server Java wiki
- A dedicated SAP NetWeaver 7.40 Application Server for Java Security Guide exists.
The advisory is valid for
- SERVERCORE 7.10 7
- SERVERCORE 7.11 7
- SERVERCORE 7.20 7
- SERVERCORE 7.30 7
- SERVERCORE 7.31 7
- SERVERCORE 7.40 7
- SERVERCORE 7.50 7
Disclaimer
ABEX takes the security of SAP products very seriously. We very much encourage the responsible disclosure of security vulnerabilities. If you have detected a vulnerability in one of the SAP software products – either in the latest or in a former product version follow the guidelines and processes in accordance with the SAP portal page “Report a Security Vulnerability to SAP”.
The advisories found within the ABEX security advisory are generated and continuously enriched by ABEX and affiliated security consultants, partners, customers of the SecurityBridge security suite, SAP support, and advisory groups.
There is no disclosure of zero-day vulnerabilities. In such case, the platform only provides details on which version or signature updates are available within the SecurityBridge platform in order to monitor or measure the vulnerability
In accordance with SAP guidelines, ABEX only discloses issues where the fixing security note has been released at least three months ago. The vulnerability platform makes no references to available exploits or Proof of Concepts (PoC). Advisories and vulnerabilities will always mention the fixing security note or hints to the corresponding SAP documentation.
