Arbitrary file upload in Getk2 K2
CVE-2019-19576
class.upload.php in verot.net class.upload before 1.0.3 and 2.x before 2.0.4, as used in the K2 extension for Joomla! and other products, omits .phar from the set of dangerous file extensions.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.264 (97.9th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.264 · newest: 0.264 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.verot.net/php_class_upload.htm (Vendor Advisory)
- www.verot.net (Product)
- github.com/verot/class.upload.php/compare/2.0.3...2.0.4 (Patch, Third Party Advisory)
- github.com/verot/class.upload.php/commit/5a7505ddec956fdc9e9c071ae5089865559174… (Patch, Third Party Advisory)
- github.com/verot/class.upload.php/compare/1.0.2...1.0.3 (Patch, Third Party Advisory)
- github.com/verot/class.upload.php/commit/db1b4fe50c1754696970d8b437f07e7b94a7eb… (Patch, Third Party Advisory)
- github.com/getk2/k2/commit/d1344706c4b74c2ae7659b286b5a066117155124 (Patch, Third Party Advisory)
- github.com/jra89/CVE-2019-19576 (Exploit, Third Party Advisory)
- medium.com/@jra8908/cve-2019-19576-e9da712b779
- packetstormsecurity.com/files/155577/Verot-2.0.3-Remote-Code-Execution.html (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-19576?
- CVE-2019-19576 is a critical-severity vulnerability in Getk2 K2, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2019-12-04.
- How severe is CVE-2019-19576?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2019-19576 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.