CVE-2021-21474 : Exploit Details and Defense Strategies
Learn about CVE-2021-21474 affecting SAP HANA Database versions 1.0 and 2.0. Understand the impact, technical details, and mitigation steps for this authentication vulnerability.
SAP HANA Database versions 1.0 and 2.0 are affected by a vulnerability that allows attackers to manipulate SAML tokens with MD5 digest, potentially leading to unauthorized access and data exposure.
Understanding CVE-2021-21474
This CVE pertains to the improper authentication issue in SAP HANA Database versions 1.0 and 2.0, allowing attackers to exploit MD5-digest signed SAML Assertions.
What is CVE-2021-21474?
The vulnerability in SAP HANA Database versions 1.0 and 2.0 enables attackers to tamper with signed SAML Assertions issued for the instance, facilitating impersonation and unauthorized access.
The Impact of CVE-2021-21474
With a CVSS base score of 4.1, this vulnerability poses a moderate risk, potentially enabling attackers to impersonate users, access sensitive data, and compromise the integrity of the database.
Technical Details of CVE-2021-21474
This section delves into the specific technical aspects of the CVE.
Vulnerability Description
SAP HANA Database versions 1.0 and 2.0 accept SAML tokens with MD5 digest, allowing attackers to modify signed SAML Assertions without invalidating digital signatures, thus gaining unauthorized database access.
Affected Systems and Versions
The vulnerability affects SAP HANA Database versions 1.0 and 2.0.
Exploitation Mechanism
Attackers exploit this vulnerability by obtaining MD5-digest signed SAML Assertions for an SAP HANA instance, enabling them to tamper with and impersonate users without invalidating the signature.
Mitigation and Prevention
Discover the necessary steps to mitigate and prevent exploitation of CVE-2021-21474.
Immediate Steps to Take
Immediately update SAP HANA Database to versions beyond 2.0 or apply relevant security patches to mitigate the vulnerability.
Long-Term Security Practices
Enforce robust authentication mechanisms, regularly update systems, and monitor for unauthorized access to enhance long-term security.
Patching and Updates
Stay informed about security updates from SAP and promptly apply patches to address vulnerabilities and strengthen database security.