Medium Severity
Affected system
HANA Platform
CVSS
4.2
Component
HAN-DB-SEC
Patch Day
2020-12
Released on
2020/12/08
SAP Note
2978768
Workaround
Yes
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Advisory

A note with CVSS 4.2 for component HAN-DB-SEC was released by SAP on 08.12.2020. The correction/advisory 2978768 was described with "[CVE-2020-26834 ] Improper authentication in SAP HANA database" and affects the system type HANA Platform.

A workaround exists, according to SAP Security Advisory team. It is advisable to implement the correction as part of maintenance.

The vulnerability addressed is missing authentication check within HANA Platform.

Risk specification

The SAP HANA database does not correctly validate the user name when performing SAML bearer token-based user authentication, allowing to manipulate a valid existing SAML bearer token to authenticate as a user whose name is identical to the truncated user name for whom the SAML bearer token was issued.

Solution

The SAP HANA database now properly performs the validation of the SAML token during the authentication.  Although an alternative solution exists, it is advisable to apply the correction! This is the workaround, which was suggested by the SAP security experts: "Disable the SAML authentication only for the affected users.".

Affected System

SAP HANA is a high-performance in-memory database and the basis for a so called "Real-Time Data Platform". SAP HANA allows online transaction processing (OLTP) and online analytical processing (OLAP) on one system. SAP HANA Extended Application Services (aka SAP HANA XS) is a key aspect of SAP HANA as a platform.

Additonal resources

The advisory is valid for

 

 

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