CVE-2021-37579

Bypass deserialization checks in Apache Dubbo

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.

References

Link	Tags
https://lists.apache.org/thread.html/r898afa109cdbb4b79724308648ff0718152ebe1d3d6dfc7202d958bc%40%3Cdev.dubbo.apache.org%3E	vendor advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-37579?: CVE-2021-37579 has been scored as a critical severity vulnerability.
How to fix CVE-2021-37579?: To fix CVE-2021-37579, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-37579 being actively exploited in the wild?: It is possible that CVE-2021-37579 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~5% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-37579?: CVE-2021-37579 affects Apache Software Foundation Apache Dubbo.

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Description

Category

CWE-502 – Deserialization of Untrusted Data

References

Frequently Asked Questions