Auth bypass in SAP Hana Database
CVE-2020-26834
SAP HANA Database, version - 2.0, does not correctly validate the username when performing SAML bearer token-based user authentication. It is possible to manipulate a valid existing SAML bearer token to authenticate as a user whose name is identical to the truncated username for whom the SAML bearer token was issued.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.007 (50.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000
Affected products
- SAP Hana Database — versions 2.00
- SAP Se Hana Database — versions < 2.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wiki.scn.sap.com/wiki/pages/viewpage.action (Vendor Advisory)
- launchpad.support.sap.com/ (Permissions Required)
Frequently asked questions
- What is CVE-2020-26834?
- CVE-2020-26834 is a medium-severity vulnerability in SAP Hana Database, classified under Improper Authentication. CVSS score: 5.4/10. Published 2020-12-09.
- How severe is CVE-2020-26834?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2020-26834 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.