Input validation error in SAP HANA Database

1) Input validation error

EUVDB-ID: #VU50452

Risk: Low

CVSSv3.1: 3.6 [CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21474

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote user to bypass implemented security restrictions.

The vulnerability exists due to improper input validation in the SAML assertion signature MD5 digest algorithm. A remote user can pass specially crafted input to the application and bypass implemented security restrictions.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SAP HANA: 1.00 - 2.00

External links

http://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=568460543
http://launchpad.support.sap.com/#/notes/2992154

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.