CVE-2021-33670 : What You Need to Know

This CVE-2021-33670 article provides an in-depth understanding of the vulnerability identified in SAP NetWeaver AS for Java (Http Service).

Understanding CVE-2021-33670

This section delves into the specifics of CVE-2021-33670, its impact, technical details, and mitigation strategies.

What is CVE-2021-33670?

CVE-2021-33670 affects SAP NetWeaver AS for Java (Http Service) versions including 7.10, 7.11, 7.20, 7.30, 7.31, 7.40, and 7.50. It allows attackers to disrupt the HTTP server, resulting in a denial of service vulnerability.

The Impact of CVE-2021-33670

With a CVSS base score of 7.5, this vulnerability poses a high risk as attackers can crash the filter, rendering the HTTP server inaccessible to legitimate users.

Technical Details of CVE-2021-33670

Explore the specific technical aspects of this vulnerability, including its description, affected systems, and exploitation mechanism.

Vulnerability Description

The flaw in SAP NetWeaver AS for Java (Http Service) enables attackers to send multiple HTTP requests with different method types, leading to a denial of service incident.

Affected Systems and Versions

Versions < 7.10 to < 7.50 of SAP NetWeaver AS for Java (Http Service) are impacted by this vulnerability, leaving them susceptible to exploitation.

Exploitation Mechanism

By sending multiple HTTP requests with varying method types, threat actors can overwhelm the filter, causing the HTTP server to become unavailable.

Mitigation and Prevention

Discover the steps to take immediately and long-term security practices to safeguard systems against CVE-2021-33670.

Immediate Steps to Take

In response to this threat, organizations should implement immediate security measures to protect their SAP NetWeaver AS for Java (Http Service) installations.

Long-Term Security Practices

Develop and maintain robust security protocols and practices to mitigate the risk of denial of service attacks and enhance overall system resilience.

Patching and Updates

Regularly apply relevant patches and updates provided by SAP SE to address this vulnerability and prevent exploitation.