High Severity
Affected system
SAP HANA Platform
Patch Day
Released on
SAP Note
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A note with CVSS 7.7 for component HAN-DB-SEC was released by SAP on 09.03.2021. The correction/advisory 3017378 was described with "[CVE-2021-21484] Possible authentication bypass in SAP HANA LDAP scenarios" and affects the system type SAP 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 SAP HANA Platform.

Risk specification

LDAP authentication in SAP HANA can be bypassed if the attached LDAP directory server is configured to enable unauthenticated bind. SAP HANA can be configured to automatically create users based on LDAP authentication which can result in the creation of new users by the attacker.


Incomplete authentication credentials are not forwarded by SAP HANA to the LDAP directory. Please update to these or later versions to benefit from the improvement:

  • SAP HANA 2.0 SPS04: revision 48.04
  • SAP HANA 2.0 SPS05: revision 54
 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 unauthenticated bind in the LDAP directory server's configuration and also disable LDAP based authentication for affected systems and users in SAP HANA.".

The advisory is valid for




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