Improper input validation in Flatcore
CVE-2021-23835
An issue was discovered in flatCore before 2.0.0 build 139. A local file disclosure vulnerability was identified in the docs_file HTTP request body parameter for the acp interface. This can be exploited with admin access rights. The affected parameter (which retrieves the contents of the specified file) was found to be accepting malicious user input without proper sanitization, thus leading to retrieval of backend server sensitive files, e.g., /etc/passwd, SQLite database files, PHP source code, etc.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.017 (76.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/flatCore/flatCore-CMS (Product, Third Party Advisory)
- sec-consult.com/vulnerability-lab/ (Third Party Advisory)
- packetstormsecurity.com/files/160936/flatCore-CMS-XSS-File-Disclosure-SQL-Injec… (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-23835?
- CVE-2021-23835 is a medium-severity vulnerability in Flatcore, classified under Improper Input Validation. CVSS score: 4.9/10. Published 2021-01-15.
- How severe is CVE-2021-23835?
- Medium severity. CVSS v3 base score is 4.9 out of 10.