What is CVE-2019-14771?

CVE-2019-14771 is a critical-severity vulnerability in Backdropcms Backdrop Cms, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2019-08-08.

How severe is CVE-2019-14771?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Improper input validation in Backdropcms Backdrop Cms

CVE-2019-14771

Backdrop CMS 1.12.x before 1.12.8 and 1.13.x before 1.13.3 allows the upload of entire-site configuration archives through the user interface or command line. It does not sufficiently check uploaded archives for invalid data, potentially allowing non-configuration scripts to be uploaded to the server. (This attack is mitigated by the attacker needing the "Synchronize, import, and export configuration" permission, a permission that only trusted administrators should be given. Other preventative measures in Backdrop CMS prevent the execution of PHP scripts, so another server-side scripting language must be accessible on the server to execute code.) Note: This has been disputed by multiple 3rd parties due to advanced permissions that are needed to exploit.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.026 (84.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Backdropcms Backdrop_cms
N/a — versions n/a

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

cve@mitre.org (Vendor Advisory)

Frequently asked questions

What is CVE-2019-14771?: CVE-2019-14771 is a critical-severity vulnerability in Backdropcms Backdrop Cms, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2019-08-08.
How severe is CVE-2019-14771?: Critical severity. CVSS v3 base score is 9.8 out of 10.