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CVE-2021-21478 : Security Advisory and Response

Discover how CVE-2021-21478 impacts SAP Web Dynpro ABAP in SAP NetWeaver AS ABAP, allowing attackers to redirect users to malicious websites through Reverse Tabnabbing. Learn about the technical details and mitigation strategies.

SAP Web Dynpro ABAP in SAP NetWeaver AS ABAP is affected by a vulnerability that enables attackers to redirect users to malicious sites due to Reverse Tabnabbing.

Understanding CVE-2021-21478

This section will provide insights into the impact and technical details of the CVE.

What is CVE-2021-21478?

The vulnerability in SAP Web Dynpro ABAP allows threat actors to carry out a Reverse Tabnabbing attack, redirecting users to malicious websites.

The Impact of CVE-2021-21478

With a CVSS base score of 4.7, this medium-severity vulnerability can be exploited with low complexity, requiring user interaction to change the scope and compromise user integrity.

Technical Details of CVE-2021-21478

Delve into the specifics of the vulnerability with this detailed analysis.

Vulnerability Description

The flaw in SAP Web Dynpro ABAP lets attackers perform Reverse Tabnabbing, posing risks of user redirection to harmful sites.

Affected Systems and Versions

Multiple versions of SAP NetWeaver AS ABAP (Web Dynpro ABAP) are impacted, including SAP_UI 750, 752, 753, 754, 755, and SAP_BASIS 700, 701, 702, 731, 804.

Exploitation Mechanism

Exploiting this vulnerability requires network access and user interaction to redirect users to malicious sites, potentially leading to integrity compromise.

Mitigation and Prevention

Learn about the essential steps to mitigate the risks associated with CVE-2021-21478.

Immediate Steps to Take

Implement security patches and educate users about phishing techniques to prevent falling victim to Reverse Tabnabbing attacks.

Long-Term Security Practices

Enforce secure coding practices, regularly update systems, and conduct security assessments to enhance overall cybersecurity posture.

Patching and Updates

Stay informed about SAP security updates, apply patches promptly, and monitor for any suspicious activities to safeguard systems against exploits.

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