CVE-2020-26816 Explained : Impact and Mitigation

SAP AS JAVA (Key Storage Service) versions 7.10, 7.11, 7.20, 7.30, 7.31, 7.40, 7.50 are affected by a vulnerability due to missing encryption in the key material stored in the SAP NetWeaver AS Java Key Storage service. This allows an attacker with administrator access to decode keys, potentially compromising application data and client credentials.

Understanding CVE-2020-26816

This CVE identifies a security issue in SAP NetWeaver AS JAVA (Key Storage Service) that impacts confidentiality by exposing client credentials of adjacent systems.

What is CVE-2020-26816?

The vulnerability arises from the unencrypted storage of key material in the SAP NetWeaver AS Java Key Storage service, enabling unauthorized access to sensitive information.

The Impact of CVE-2020-26816

The lack of encryption in key storage poses a significant risk to confidentiality, potentially leading to the exposure of client credentials from connected systems.

Technical Details of CVE-2020-26816

The following technical aspects are associated with this CVE:

Vulnerability Description

The key material stored in SAP NetWeaver AS Java Key Storage service is in DER encoded format without encryption.

Affected Systems and Versions

SAP NetWeaver AS JAVA (Key Storage Service) versions: 7.10, 7.11, 7.20, 7.30, 7.31, 7.40, 7.50.

Exploitation Mechanism

Attack Complexity: High
Attack Vector: Adjacent Network
Confidentiality Impact: High
Privileges Required: High
Scope: Changed

Mitigation and Prevention

To address CVE-2020-26816, consider the following steps:

Immediate Steps to Take

Apply relevant security patches provided by SAP.
Monitor and restrict access to the SAP NetWeaver AS Java Key Storage service.

Long-Term Security Practices

Implement encryption mechanisms for sensitive data storage.
Regularly review and update security configurations.

Patching and Updates

Stay informed about security updates from SAP and apply them promptly to mitigate risks.