CVE-2021-21474 Weak cryptography in SAP HANA Database
Attackers can tamper with MD5-signed SAML tokens to impersonate users and read database contents in SAP HANA.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-21474?
CVE-2021-21474 is a medium-severity vulnerability in SAP HANA Database, published on 9 Feb 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
SAP HANA Database, versions - 1.0, 2.0, accepts SAML tokens with MD5 digest, an attacker who manages to obtain an MD5-digest signed SAML Assertion issued for an SAP HANA instance might be able to tamper with it and alter it in a way that the digest continues to be the same and without invalidating the digital signature, this allows them to impersonate as user in HANA database and be able to read the contents in the database.
Weakness: CWE-326
Which versions are affected by CVE-2021-21474?
It affects 1 product.
Products include Sap Hana Database.
How do I fix CVE-2021-21474?
No fix has been published for CVE-2021-21474 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-21474 being exploited?
There is no known exploitation of CVE-2021-21474 in the wild and no public exploit code.
Other vulnerabilities in SAP HANA Database
- CVE-2018-2424 Cross-site scripting in SAP HANA Database
- CVE-2026-0492 Privilege escalation vulnerability in SAP HANA database
- CVE-2019-0350 Denial of service in SAP HANA Database
- CVE-2017-16687 Information disclosure in SAP HANA extended application services
- CVE-2020-26834 Auth bypass in SAP HANA Database
Sources
Also known as GHSA-8xcp-qvv3-hccf.