Cyber Resilience

CVE-2018-19942

Medium

Published: 16 April 2021

Published
16 April 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS Score 0.0033 56.0th percentile
Risk Priority 12 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2018-19942 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Qnap Qts. Its CVSS base score is 6.1 (Medium).

Operationally, ranked in the top 44.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

A cross-site scripting (XSS) vulnerability has been reported to affect earlier versions of File Station. If exploited, this vulnerability allows remote attackers to inject malicious code. We have already fixed this vulnerability in the following versions: QTS 4.5.2.1566 build 20210202…

more

(and later) QTS 4.5.1.1456 build 20201015 (and later) QTS 4.3.6.1446 build 20200929 (and later) QTS 4.3.4.1463 build 20201006 (and later) QTS 4.3.3.1432 build 20201006 (and later) QTS 4.2.6 build 20210327 (and later) QuTS hero h4.5.1.1472 build 20201031 (and later) QuTScloud c4.5.4.1601 build 20210309 (and later) QuTScloud c4.5.3.1454 build 20201013 (and later)

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

qnap
qts
4.2.6, 4.3.3, 4.3.3.0095, 4.3.3.0096, 4.3.3.0136 · ≤ 4.2.6 · 4.3.5 — 4.3.6 · 4.4.0 — 4.5.1
qnap
quts hero
h4.5.1 · ≤ h4.5.1
qnap
qutscloud
c4.5.3, c4.5.4 · ≤ c4.5.3

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-79

Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.

addresses: CWE-79

Validates web inputs to reject script-related content that could produce XSS.

addresses: CWE-79

Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.

References