CVE-2021-27605 : What You Need to Know

SAP's HCM Travel Management Fiori Apps V2, version - 608, has a vulnerability that allows an authenticated but unauthorized attacker to read personnel numbers of employees, resulting in escalation of privileges. This CVE has a CVSS base score of 4.3 (Medium).

Understanding CVE-2021-27605

This section provides insights into the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2021-27605?

CVE-2021-27605 is a vulnerability in SAP Fiori Apps 2.0 for Travel Management in SAP ERP that arises due to a lack of proper authorization checks, enabling unauthorized users to access personnel data.

The Impact of CVE-2021-27605

The vulnerability allows attackers to retrieve employees' personnel numbers, leading to an escalation of privileges. Although the attacker can only access limited information like last names and first names, there is a risk of some confidential data exposure.

Technical Details of CVE-2021-27605

This section delves into the specifics of the vulnerability.

Vulnerability Description

SAP Fiori Apps 2.0 for Travel Management fails to conduct adequate authorization verification, permitting unauthorized access to sensitive personnel information.

Affected Systems and Versions

The affected product is SAP Fiori Apps 2.0 for Travel Management in SAP ERP with a version less than 608.

Exploitation Mechanism

By exploiting the lack of proper authorization checks, authenticated but unauthorized attackers can view personnel numbers of employees, potentially compromising sensitive data.

Mitigation and Prevention

To address CVE-2021-27605 and enhance system security, consider the following steps.

Immediate Steps to Take

Implement access controls, review user permissions, and restrict sensitive data access to authorized personnel only.

Long-Term Security Practices

Regularly monitor and audit user activities, conduct security training for employees, and keep software up to date to prevent similar vulnerabilities.

Patching and Updates

Ensure timely installation of security patches and updates provided by SAP to mitigate the risk posed by CVE-2021-27605.