CVE-2020-36198: QNAP NAS Malware Remover Command Injection Privilege Escalation Vulnerability

Published May 13, 2021
·
Updated

A command injection vulnerability has been reported to affect certain versions of Malware Remover. If exploited, this vulnerability allows remote attackers to execute arbitrary commands. This issue affects: QNAP Systems Inc. Malware Remover versions prior to 4.6.1.0. This issue does not affect: QNAP Systems Inc. Malware Remover 3.x.

Other sources

This vulnerability allows local attackers to escalate privileges on affected installations of QNAP NAS. Authentication is required to exploit this vulnerability. The specific flaw exists within the Malware Remover application. A crafted TAR file in the file system can trigger execution of a system call composed from a user-supplied string. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the admin user.

ZDI

Affected Software

2 affected components
QNAP NAS
QNAP Malware Remover>=4.5.4.0<4.6.1.0

Remediation

Information

QNAP have already fixed the issue in the following versions: QTS 4.4.x: Malware Remover 4.6.1.0 and later

Event History

May 13, 2021
CVE Published
via MITRE·02:55 AM
Data Sourced
via MITRE·02:55 AM
RemedyDescriptionSeverityWeakness
Aug 4, 2024
Advisory Published
via ZDI·05:28 PM

Frequently Asked Questions

1

What is CVE-2020-36198?

CVE-2020-36198 is a vulnerability that allows local attackers to escalate privileges on affected installations of QNAP NAS.

2

How does CVE-2020-36198 affect QNAP NAS?

CVE-2020-36198 affects QNAP NAS by allowing local attackers to escalate privileges.

3

Is authentication required to exploit CVE-2020-36198?

Yes, authentication is required to exploit CVE-2020-36198.

4

Which application is affected by CVE-2020-36198?

The Malware Remover application is affected by CVE-2020-36198.

5

How can I fix CVE-2020-36198?

To fix CVE-2020-36198, update your QNAP NAS to version 4.6.1.0 or later.

Contact

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