Arbitrary file upload in Machform

CVE-2018-6411

An issue was discovered in Appnitro MachForm before 4.2.3. When the form is set to filter a blacklist, it automatically adds dangerous extensions to the filters. If the filter is set to a whitelist, the dangerous extensions can be bypassed through ap_form_elements SQL Injection.

Vulnerability class: Unrestricted File Upload

EPSS: 0.059 (92.4th 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

  • Machform — versions 4.2.3
  • N/a — versions n/a

Weakness classification (CWE)

References

  • cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
  • cve@mitre.org (Exploit, VDB Entry, Third Party Advisory, exploit, x_refsource_EXPLOIT-DB)
  • cve@mitre.org (x_refsource_MISC, Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2018-6411?
CVE-2018-6411 is a critical-severity vulnerability in Machform, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2018-05-26.
How severe is CVE-2018-6411?
Critical severity. CVSS v3 base score is 9.8 out of 10.