CVE-2019-12017

Description

A remote code execution vulnerability exists in MapR CLDB code, specifically in the JSON framework that is used in the CLDB code that handles login and ticket issuance. An attacker can use the 'class' property of the JSON request sent to the CLDB to influence the JSON library's decision on which Java class this JSON request is deserialized to. By doing so, the attacker can force the MapR CLDB to construct a URLClassLoader which loads a malicious Java class from a remote path and instantiate this object in the MapR CLDB, thus executing arbitrary code on the machine running the MapR CLDB and take over the cluster. By switching to the newer Jackson library and ensuring that all incoming JSON requests are only deserialized to the same class that it was serialized from, the vulnerability is fixed. This vulnerability affects the entire MapR core platform.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 2.53% Top 20%
Vendor Advisory mapr.com
Affected: n/a MapR-MFS/CLDB
Published at:
Updated at:

References

Link Tags
https://mapr.com/support/s/article/Remote-code-execution-vulnerability-in-MapR-MFS-CLDB?language=en_US vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-12017?
CVE-2019-12017 has been scored as a critical severity vulnerability.
How to fix CVE-2019-12017?
To fix CVE-2019-12017, 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-2019-12017 being actively exploited in the wild?
It is possible that CVE-2019-12017 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-12017?
CVE-2019-12017 affects n/a MapR-MFS/CLDB.
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