Arbitrary file upload in Gurock Testrail

CVE-2018-20063

An issue was discovered in Gurock TestRail 5.6.0.3853. An "Unrestricted Upload of File" vulnerability exists in the image-upload form (available in the description editor), allowing remote authenticated users to execute arbitrary code by uploading an image file with an executable extension but a safe Content-Type value, and then accessing it via a direct request to the file in the file-upload directory (if it's accessible according to the server configuration).

Vulnerability class: Unrestricted File Upload

EPSS: 0.027 (84.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2018-20063?
CVE-2018-20063 is a high-severity vulnerability in Gurock Testrail, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2019-02-25.
How severe is CVE-2018-20063?
High severity. CVSS v3 base score is 8.8 out of 10.