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CVE-2018-19945

CRITICALCVSS 9.1/10EPSS 1.11%

Last modified

CVE-2018-19945 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. A vulnerability has been reported to affect earlier QNAP devices running QTS 4.3.4 to 4.3.6. Caused by improper limitations of a pathname to a restricted directory, this vulnerability allows for renaming arbitrary files on the target system, if exploited. EPSS estimates a 1.11% chance of exploitation in the next 30 days.

Description

A vulnerability has been reported to affect earlier QNAP devices running QTS 4.3.4 to 4.3.6. Caused by improper limitations of a pathname to a restricted directory, this vulnerability allows for renaming arbitrary files on the target system, if exploited. QNAP have already fixed this vulnerability in the following versions: QTS 4.3.6.0895 build 20190328 (and later) QTS 4.3.4.0899 build 20190322 (and later) This issue does not affect QTS 4.4.x or QTS 4.5.x.

Metrics

CVSS 3.1
9.1/10

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

EPSS Probability
1.11%

61.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
QnapQts>= 4.3.4, < 4.3.4.0899
QnapQts>= 4.3.5, < 4.3.6.0895

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-19945?
A vulnerability has been reported to affect earlier QNAP devices running QTS 4.3.4 to 4.3.6. Caused by improper limitations of a pathname to a restricted directory, this vulnerability allows for renaming arbitrary files on the target system, if exploited. QNAP have already fixed this vulnerability in the following versions: QTS 4.3.6.0895 build 20190328 (and later) QTS 4.3.4.0899 build 20190322 (and later) This issue does not affect QTS 4.4.x or QTS 4.5.x.
How severe is CVE-2018-19945?
CVE-2018-19945 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.11% probability of exploitation in the next 30 days.
How do I fix CVE-2018-19945?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-19945?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST