CVE-2018-19949 is a vulnerability in QNAP Qts
Published on October 28, 2020
If exploited, this command injection vulnerability could allow remote attackers to run arbitrary commands. QNAP has already fixed the issue in the following QTS versions. QTS 4.4.2.1231 on build 20200302; QTS 4.4.1.1201 on build 20200130; QTS 4.3.6.1218 on build 20200214; QTS 4.3.4.1190 on build 20200107; QTS 4.3.3.1161 on build 20200109; QTS 4.2.6 on build 20200109.
Known Exploited Vulnerability
This QNAP NAS File Station Command Injection Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. A command injection vulnerability affecting QNAP NAS File Station could allow remote attackers to run commands.
The following remediation steps are recommended / required by June 14, 2022: Apply updates per vendor instructions.
Vulnerability Analysis
CVE-2018-19949 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors in an automatable fashion. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Types
Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
What is a Command Injection Vulnerability?
The software constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
CVE-2018-19949 has been classified to as a Command Injection vulnerability or weakness.
What is a Shell injection Vulnerability?
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
CVE-2018-19949 has been classified to as a Shell injection vulnerability or weakness.
Products Associated with CVE-2018-19949
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Affected Versions
QNAP Systems Inc. QTS:- Version unspecified and below 4.4.2.1231 is affected.
- Version unspecified and below 4.4.1.1201 is affected.
- Version unspecified and below 4.3.6.1218 is affected.
- Version unspecified and below 4.3.4.1190 is affected.
- Version unspecified and below 4.3.3.1161 is affected.
- Version unspecified and below 4.2.6 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.