Arbitrary file upload in Rconfig
CVE-2020-12255
rConfig 3.9.4 is vulnerable to remote code execution due to improper validation in the file upload functionality. vendor.crud.php accepts a file upload by checking content-type without considering the file extension and header. Thus, an attacker can exploit this by uploading a .php file to vendor.php that contains arbitrary PHP code and changing the content-type to image/gif.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.526 (99.0th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.526 · newest: 0.526 · change: 0.000
Affected products
- Rconfig — versions 3.9.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gist.github.com/farid007/9f6ad063645d5b1550298c8b9ae953ff (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-12255?
- CVE-2020-12255 is a high-severity vulnerability in Rconfig, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2020-05-18.
- How severe is CVE-2020-12255?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2020-12255 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.