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.
Published 2020-10-28 18:15:13
Updated 2020-11-13 17:38:51
View at NVD,   CVE.org
Vulnerability category: Input validation

CVE-2018-19949 is in the CISA Known Exploited Vulnerabilities Catalog

This issue is known to have been leveraged as part of a ransomware campaign.
CISA vulnerability name:
QNAP NAS File Station Command Injection Vulnerability
CISA required action:
Apply updates per vendor instructions.
CISA description:
A command injection vulnerability affecting QNAP NAS File Station could allow remote attackers to run commands.
Added on 2022-05-24 Action due date 2022-06-14

Exploit prediction scoring system (EPSS) score for CVE-2018-19949

0.67%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 77 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-19949

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.5
HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
NIST
9.8
CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
NIST

CWE ids for CVE-2018-19949

  • 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.
    Assigned by: security@qnapsecurity.com.tw (Secondary)
  • The product 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.
    Assigned by:
    • nvd@nist.gov (Primary)
    • security@qnapsecurity.com.tw (Secondary)
  • The product 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.
    Assigned by: security@qnapsecurity.com.tw (Secondary)

References for CVE-2018-19949

Products affected by CVE-2018-19949

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