QNAP NAS File Station Cross-Site Scripting Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-05-24
• Known to be used in ransomware campaigns
• EPSS: 23% chance of exploitation in the next 30 days (higher than 98% of CVEs)

[ Description ]Official description

If exploited, this cross-site scripting vulnerability could allow remote attackers to inject malicious code. QNAP has already fixed these issues in the following QTS versions. QTS 4.4.2.1270 build 20200410 and later QTS 4.4.1.1261 build 20200330 and later QTS 4.3.6.1263 build 20200330 and later QTS 4.3.4.1282 build 20200408 and later QTS 4.3.3.1252 build 20200409 and later QTS 4.2.6 build 20200421 and later

CISA: A cross-site scripting vulnerability affecting QNAP NAS File Station could allow remote attackers to inject malicious code.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 14 Jun 2022): Apply updates per vendor instructions.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• www.qnap.com/zh-tw/security-advisory/qsa-20-01Vendor Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource