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CVE-2021-37579

9.8 · CRITICAL

The Dubbo Provider will check the incoming request and the corresponding serialization type of this request meet the configuration set by the server.

Published Sep 9, 2021CWE-502EPSS 6.56%

Overview

CVE-2021-37579 is a critical-severity vulnerability. It was published on September 9, 2021 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The Dubbo Provider will check the incoming request and the corresponding serialization type of this request meet the configuration set by the server. But there's an exception that the attacker can use to skip the security check (when enabled) and reaching a deserialization operation with native java serialization. Apache Dubbo 2.7.13, 3.0.2 fixed this issue by quickly fail when any unrecognized request was found.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.apache.org/thread.html/r898afa109cdbb4b79724308648ff0718152ebe1d3d6dfc7202d958bc%40%3Cdev.dubbo.apache.org%3EReflists.apache.org/thread.html/r898afa109cdbb4b79724308648ff0718152ebe1d3d6dfc7202d958bc%40%3Cdev.dubbo.apache.org%3E

How CyberStrike helps

Frequently asked questions

What is CVE-2021-37579?

CVE-2021-37579 is a critical-severity vulnerability. It was published on September 9, 2021 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2021-37579?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-37579?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-37579?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-37579 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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