What is CVE-2018-14911?

CVE-2018-14911 is a high-severity vulnerability in Ukcms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.2/10. Published 2018-08-03.

How severe is CVE-2018-14911?

High severity. CVSS v3 base score is 7.2 out of 10.

Arbitrary file upload in Ukcms

CVE-2018-14911

A file upload vulnerability exists in ukcms v1.1.7 and earlier. The vulnerability is due to the system not strictly filtering the file upload type. An attacker can exploit the vulnerability to upload a script Trojan to admin.php/admin/configset/index/group/upload.html to gain server control by composing a request for a .txt upload and then changing it to a .php upload. The attacker must have admin access to change the upload_file_ext (aka "Allow upload file suffix") setting, and must use "php,php" in this setting to bypass the "php" restriction.

Vulnerability class: Unrestricted File Upload

EPSS: 0.011 (62.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ukcms
N/a — versions n/a

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2018-14911?: CVE-2018-14911 is a high-severity vulnerability in Ukcms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.2/10. Published 2018-08-03.
How severe is CVE-2018-14911?: High severity. CVSS v3 base score is 7.2 out of 10.