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.

Severity

 

CVSS Version 3.x CVSS Version 2.0

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score:  9.8 CRITICAL

Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

CVSS 2.0 Severity and Metrics:

NIST: NVD

Base Score:  7.5 HIGH

Vector:  (AV:N/AC:L/Au:N/C:P/I:P/A:P)

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://mapr.com/support/s/article/Remote-code-execution-vulnerability-in-MapR-MFS-CLDB?language=en_US	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-502	Deserialization of Untrusted Data	NIST

Known Affected Software Configurations Switch to CPE 2.2

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Change History

2 change records found show changes

CWE Remap by NIST 8/24/2020 1:37:01 PM

Action	Type	Old Value	New Value
Changed	CWE	CWE-20	CWE-502

Initial Analysis by NIST 10/29/2019 1:59:38 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		OR *cpe:2.3:a:mapr:mapr:*:*:*:*:*:*:*:* versions up to (excluding) 5.2.2
Added	CVSS V2		NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added	CWE		NIST CWE-20
Changed	Reference Type	https://mapr.com/support/s/article/Remote-code-execution-vulnerability-in-MapR-MFS-CLDB?language=en_US No Types Assigned	https://mapr.com/support/s/article/Remote-code-execution-vulnerability-in-MapR-MFS-CLDB?language=en_US Vendor Advisory