CVE-2021-21485 : What You Need to Know

A Telnet command injection vulnerability, identified as CVE-2021-21485, impacts SAP NetWeaver AS for JAVA environments, enabling unauthorized attackers to obtain NTLM hashes of privileged users.

Understanding CVE-2021-21485

This section delves into the details of the CVE-2021-21485 vulnerability affecting SAP NetWeaver AS for JAVA.

What is CVE-2021-21485?

CVE-2021-21485 is an information disclosure vulnerability that allows malicious actors to trick administrators into executing Telnet commands on SAP NetWeaver AS for JAVA, leading to the extraction of NTLM hashes from a privileged user.

The Impact of CVE-2021-21485

With a CVSS base score of 7.4 (High Severity), this vulnerability poses a significant risk to the confidentiality of sensitive information within affected systems.

Technical Details of CVE-2021-21485

Explore the specific technical aspects associated with CVE-2021-21485, including the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

The flaw in SAP NetWeaver AS for JAVA allows threat actors to execute Telnet commands, potentially resulting in the compromise of NTLM hashes from a privileged user, leading to unauthorized access to critical information.

Affected Systems and Versions

SAP NetWeaver AS for JAVA versions ENGINEAPI 7.30, 7.31, 7.40, 7.50, ESP_FRAMEWORK 7.10, 7.20, 7.30, 7.31, 7.40, 7.50, SERVERCORE 7.10, 7.11, 7.20, 7.30, 7.31, 7.40, 7.50, and J2EE-FRMW 7.10, 7.20, 7.30, 7.31, 7.40, 7.50 are affected by this vulnerability.

Exploitation Mechanism

The exploitation involves luring an administrator to execute Telnet commands on the SAP NetWeaver AS for JAVA, thereby granting unauthorized parties access to NTLM hashes of a privileged user through social engineering techniques.

Mitigation and Prevention

Learn about the immediate steps to take to secure your systems in response to CVE-2021-21485 and establish long-term security practices for enhanced protection.

Immediate Steps to Take

Immediately address this vulnerability by applying the necessary security patches and monitoring systems for suspicious activities that may indicate exploitation attempts.

Long-Term Security Practices

Implement robust security measures, including user awareness training, network segmentation, and access controls, to prevent similar vulnerabilities in the future.

Patching and Updates

Regularly update and patch SAP NetWeaver AS for JAVA to mitigate security risks and ensure systems are protected against potential threats.