Background exploitation KEV catalog Ransomware No authentication

CVE-2018-19949

QNAP NAS File Station Command Injection Vulnerability

CheckOps priority index

7.8/10 Patch within 7 days

Severity9.8

Probability3.0

Exploitation5/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 30.2% higher than 98.2% of CVEs

CVSS 3.1 9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:

Exploited for 1,624 days 24 May 2022

CISA due date 14 Jun 2022 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 5 / 5

KEV catalog (CISA)24 May 2022
Exploited in EUVD (ENISA)24 May 2022
Used by ransomwareyes
EPSS above 10 %30.2%
No account, over the networkyes

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply updates per vendor instructions.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

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.

Affected products

QTSNetwork Attached Storage (NAS)

Affected versions

unspecified <4.2.6
unspecified <4.4.1.1201
unspecified <4.4.2.1231
unspecified <4.3.4.1190
unspecified <4.3.6.1218
unspecified <4.3.3.1161

Weaknesses (CWE)

CWE-20 CWE-77 CWE-78

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

28 Oct 2020
Published
24 May 2022
Exploitation reported (ENISA)
24 May 2022
Added to the KEV catalog
14 Jun 2022
CISA remediation due date
22 Oct 2026
EPSS peak: 30.2%

References

Other exploited vulnerabilities from the same vendor

CVE-2023-47565QNAP VioStor NVR OS Command Injection Vulnerability
7.2 · Background exploitation
CVE-2022-27593QNAP Photo Station Externally Controlled Reference Vulnerability
9.6 · Background exploitation
CVE-2019-7195QNAP Photo Station Path Traversal Vulnerability
9.6 · Background exploitation
CVE-2019-7194QNAP Photo Station Path Traversal Vulnerability
9.4 · Background exploitation
CVE-2019-7193QNAP QTS Improper Input Validation Vulnerability
7.4 · Background exploitation
CVE-2019-7192QNAP Photo Station Improper Access Control Vulnerability
9.6 · Background exploitation