Arbitrary file upload in Atutor

CVE-2019-12170

ATutor through 2.2.4 is vulnerable to arbitrary file uploads via the mods/_core/backups/upload.php (aka backup) component. This may result in remote command execution. An attacker can use the instructor account to fully compromise the system using a crafted backup ZIP archive. This will allow for PHP files to be written to the web root, and for code to execute on the remote server.

Vulnerability class: Unrestricted File Upload

EPSS: 0.087 (94.6th 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)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2019-12170?
CVE-2019-12170 is a high-severity vulnerability in Atutor, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2019-05-17.
How severe is CVE-2019-12170?
High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2019-12170 known to be exploited?
7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.